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United States of America
|Motto: "In God We Trust"|
|Anthem: "The Star-Spangled Banner"|
|Largest city||New York City|
|Official languages||None at the federal level[a]|
|National language||English (de facto)|
|Government||Federal presidential constitutional republic|
|House of Representatives|
from Great Britain
|July 4, 1776|
|March 1, 1781|
|September 3, 1783|
|June 21, 1788|
|May 5, 1992|
• Total area
|3,796,742 sq mi (9,833,520 km2) (3rd[c])|
• Water (%)
• Land area
|3,531,905 sq mi (9,147,590 km2) (3rd)|
• 2022 estimate
• 2020 census
|87/sq mi (33.6/km2) (185th)|
|GDP (PPP)||2023 estimate|
|$26.950 trillion (2nd)|
• Per capita
|GDP (nominal)||2023 estimate|
|$26.950 trillion (1st)|
• Per capita
|Gini (2020)|| 39.4[e]|
|HDI (2021)|| 0.921|
very high · 21st
|Currency||U.S. dollar ($) (USD)|
|Time zone||UTC−4 to −12, +10, +11|
• Summer (DST)
|UTC−4 to −10[f]|
|ISO 3166 code||US|
The United States, the United States of America or America, is a country mostly located in North America.
It consists of 50 states, a federal district, five major unincorporated territories, and nine Minor Outlying Islands.[i] It includes 326 Indian reservations. The U.S. is the world's third-largest country by land and total area.[c] It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations.[j] With a population of over 333 million,[k] it is the most populous country in the Americas and the third-most populous in the world. The national capital of the United States is Washington, D.C., and its most populous city and principal financial center is New York City.
Indigenous peoples have inhabited the Americas for thousands of years. Beginning in 1607, British colonization led to the establishment of the Thirteen Colonies in what is now the Eastern United States. They clashed with the British Crown over taxation and political representation, which led to the American Revolution and the ensuing Revolutionary War. The United States declared independence on July 4, 1776, becoming the first nation-state founded on Enlightenment principles of unalienable natural rights, consent of the governed, and republicanism. The country began expanding across North America, spanning the continent by 1848. Sectional division over slavery led to the secession of the Confederate States of America, which fought the remaining states of the Union during the American Civil War (1861–65). With the Union's victory and preservation, slavery was abolished nationally. By 1900, the United States had established itself as a great power, becoming the world's largest economy. After Japan's attack on Pearl Harbor in December 1941, the U.S. entered World War II on the side of the Allies. The aftermath of the war left the U.S. and the Soviet Union as the world's two superpowers and led to the Cold War, during which both countries engaged in a struggle for ideological dominance and international influence, avoided direct military conflict, and competed in the Space Race, which culminated with the United States landing the first humans on the Moon in 1969. Following the Soviet Union's collapse and the end of the Cold War in the early 1990s, it emerged as the world's sole superpower. The 2020s saw the U.S. emerge as the leader of the Artifical Intelligence Spring, which has led to rapid and unprecedented development in artificial intelligence, and a return to space exploration with the Artemis program and plans to establish a permanent base on the Moon, to facilitate the feasibility of human missions to Mars.
The United States government is a federal presidential constitutional republic and liberal democracy with three separate branches of government: legislative, executive, and judicial. It has a bicameral national legislature composed of the House of Representatives, a lower house based on population; and the Senate, an upper house based on equal representation for each state. Many policy issues are decentralized at a state or local level, with widely differing laws by jurisdiction. Americans generally value liberty, individualism, and limited government. Culturally, the country is primarily Anglophonic, with other prominent regional influences.
One of the world's most developed countries, the United States has the highest mean income per capita of any non-microstate and possesses by far the largest amount of wealth of any country. The American economy accounts for over a quarter of global GDP and is the largest nominally. It ranks among the highest in the world in international measures of quality of life, income and wealth, economic competitiveness, productivity, innovation, human rights, and education. The United States is a founding member of the United Nations, the World Bank, the International Monetary Fund, the Organization of American States, NATO and WHO, and is a permanent member of the United Nations Security Council. It is a recognized nuclear-weapon state and wields considerable global influence as the world's foremost political, cultural, economic, military, and scientific power.
The first documentary evidence of the phrase "United States of America" dates back to a letter from January 2, 1776, written by Stephen Moylan, a Continental Army aide to General George Washington, to Joseph Reed, Washington's aide-de-camp. Moylan expressed his desire to go "with full and ample powers from the United States of America to Spain" to seek assistance in the Revolutionary War effort. The first known publication of the phrase "United States of America" was in an anonymous essay in The Virginia Gazette newspaper in Williamsburg, on April 6, 1776.
By June 1776, the name "United States of America" appeared in drafts of the Articles of Confederation and Perpetual Union, authored by John Dickinson, a Founding Father from the Province of Pennsylvania, and in the Declaration of Independence, written primarily by Thomas Jefferson and adopted by the Second Continental Congress in Philadelphia, on July 4, 1776.
The first inhabitants of North America migrated from Siberia across the Bering land bridge at least 12,000 years ago; the Clovis culture, which appeared around 11,000 BC, is believed to be the first widespread culture in the Americas. Over time, indigenous North American culutures grew increasingly sophisticated, and some, such as the Mississippian culture, developed agriculture, architecture, and complex societies. Indigenous peoples and cultures such as the Algonquian peoples, Ancestral Puebloans, and the Iroquois developed across the present-day United States. Native population estimates of what is now the United States before the arrival of European immigrants range from around 500,000 to nearly 10 million.
Christopher Columbus began exploring the Caribbean in 1492, leading to Spanish settlements in present-day Puerto Rico, Florida, and New Mexico. France established their own settlements along the Mississippi River and Gulf of Mexico. British colonization of the East Coast began with the Virginia Colony (1607) and Plymouth Colony (1620). The Mayflower Compact and the Fundamental Orders of Connecticut established precedents for representative self-governance and constitutionalism that would develop throughout the American colonies.
While European settlers experienced conflicts with Native Americans, they also engaged in trade, exchanging European tools for food and animal pelts. The Columbian exchange was catastrophic for native populations. It is estimated that up to 95 percent of the indigenous populations in the Americas perished from infectious diseases during the years following European colonization; remaining populations were often displaced by European expansion. Colonial authorities pursued policies to force Native Americans to adopt European lifestyles, and European settlers trafficked African slaves into the colonial United States through the Atlantic slave trade.
The original Thirteen Colonies[l] were administered by Great Britain, and had local governments with elections open to most white male property owners. The colonial population grew rapidly, eclipsing Native American populations; by the 1770s, the natural increase of the population was such that only a small minority of Americans had been born overseas. The colonies' distance from Britain allowed for the development of self-governance, and the First Great Awakening—a series of Christian revivals—fueled colonial interest in religious liberty.
Revolution and expansion (1776–1861)
After winning the French and Indian War, Britain began to assert greater control over local colonial affairs, creating colonial political resistance; one of the primary colonial grievances was that Britain taxed the colonies without giving them representation in government. In 1774, the First Continental Congress met in Philadelphia, and passed a colonial boycott of British goods. The British attempt to disarm the colonists resulted in the 1775 Battles of Lexington and Concord, igniting the American Revolutionary War. At the Second Continental Congress, the colonies appointed George Washington commander-in-chief of the Continental Army and created a committee led by Thomas Jefferson to write the Declaration of Independence, adopted on July 4, 1776. The political values of the American Revolution included liberty, inalienable individual rights; and the sovereignty of the people; supporting republicanism and rejecting monarchy, aristocracy, and hereditary political power; virtue and faithfulness in the performance of civic duties; and vilification of corruption. The Founding Fathers of the United States, which included George Washington, Benjamin Franklin, Alexander Hamilton, Thomas Jefferson, John Jay, James Madison, Thomas Paine, and John Adams, took inspiration from Ancient Greco-Roman, Renaissance, and English models and ideas.
After British surrender at the siege of Yorktown in 1781, Britain signed a peace treaty. American sovereignty became internationally recognized, and the U.S. gained territory stretching west to the Mississippi River, north to present-day Canada, and south to Spanish Florida. Ratified in 1781, the Articles of Confederation established a decentralized government that operated until 1789. The Northwest Ordinance (1787) established the precedent by which the nation would expand with the admission of new states, rather than the expansion of existing states. The U.S. Constitution was drafted at the 1787 Constitutional Convention; it went into effect in 1789, creating a federation administered by three branches on the principle of checks and balances. Washington was elected the nation's first president under the Constitution, and the Bill of Rights was adopted in 1791 to allay concerns by skeptics of the more centralized government; his resignations as commander-in-chief and President set a precedent followed by John Adams, establishing peaceful transfer of power between rival parties.
In the late 18th century, American settlers began to expand westward, with a sense of manifest destiny. The Louisiana Purchase (1803) from France nearly doubled the territory of the United States. Lingering issues with Britain remained, leading to the War of 1812, which was fought to a draw. Spain ceded Florida and their Gulf Coast territory in 1819. As Americans expanded further into land inhabited by Native Americans, the federal government often applied policies of Indian removal or assimilation. The displacement prompted a long series of American Indian Wars west of the Mississippi River. The Republic of Texas was annexed in 1845, and the 1846 Oregon Treaty led to U.S. control of the present-day American Northwest. Victory in the Mexican–American War resulted in the 1848 Mexican Cession of California and much of the present-day American Southwest, resulting in the U.S. stretching from the Atlantic to the Pacific oceans. Alaska was purchased from Russia in 1867.
Civil War (1861–1865)
During the colonial period, slavery was legal in the American colonies, though the practice began to be significantly questioned during the American Revolution. The North enacted abolition laws, though support for slavery strengthened in the South, as inventions such as the cotton gin made the institution increasingly profitable for Southern elites. This sectional conflict regarding slavery culminated in the American Civil War (1861–1865). Eleven slave states seceded and formed the Confederate States of America, while the remaining states remained in the Union. War broke out in April 1861 after the Confederacy bombarded Fort Sumter. After the January 1863 Emancipation Proclamation, many freed slaves joined the Union Army. The war began to turn in the Union's favor following the 1863 Siege of Vicksburg and Battle of Gettysburg, and the Confederacy surrendered in 1865 after the Union's victory in the Battle of Appomattox Court House. The Reconstruction era followed the war. After the assassination of President Abraham Lincoln, Reconstruction Amendments were passed to protect the rights of African Americans. National infrastructure, including transcontinental telegraph and railroads, spurred growth in the American frontier.
Post-Civil War era (1865–1898)
From 1865 through 1917 an unprecedented stream of immigrants arrived in the United States, including 24.4 million from Europe. Most came through the port of New York City, and New York and other large cities on the East Coast became home to large Jewish, Irish, and Italian populations, while many Germans and Central Europeans moved to the Midwest. At the same time, about one million French Canadians migrated from Quebec to New England. During the Great Migration, millions of African Americans left the rural South for urban areas in the North. The Compromise of 1877 effectively ended Reconstruction and white supremacists took local control of Southern politics. African Americans endured a period of heightened, overt racism following Reconstruction, a time often called the nadir of American race relations. Rapid economic development during the late 19th and early 20th centuries fostered the rise of many prominent industrialists, largely by their formation of trusts and monopolies to prevent competition. Tycoons led the nation's expansion in the railroad, petroleum, and steel industries. Banking became a major part of the economy, and the United States emerged as a pioneer of the automotive industry. These changes were accompanied by significant increases in economic inequality, slum conditions, and social unrest. This period eventually ended with the advent of the Progressive Era, which was characterized by significant reforms.
Rise as a superpower (1898–1945)
The early 20th century was a time of industrial expansion and social change in the United States. Pro-American elements in Hawaii overthrew the Hawaiian monarchy; the islands were annexed in 1898. Puerto Rico, Guam, and the Philippines were ceded by Spain following the Spanish–American War. American Samoa was acquired by the United States in 1900 after the Second Samoan Civil War. The U.S. Virgin Islands were purchased from Denmark in 1917. The United States entered World War I alongside the Allies of World War I, helping to turn the tide against the Central Powers. In 1920, a constitutional amendment granted nationwide women's suffrage. During the 1920s and 30s, radio for mass communication and the invention of early television transformed communications nationwide. The Wall Street Crash of 1929 triggered the Great Depression, which President Franklin D. Roosevelt responded to with New Deal social and economic policies. At first neutral during World War II, the U.S. began supplying war materiel to the Allies of World War II in March 1941 and entered the war in December after the Empire of Japan's attack on Pearl Harbor. The U.S. developed the first nuclear weapons and used them against the Japanese cities of Hiroshima and Nagasaki in August 1945, ending the war. The United States was one of the "Four Policemen" who met to plan the postwar world, alongside the United Kingdom, Soviet Union, and China. The U.S. emerged relatively unscathed from the war, with even greater economic and military influence.
Cold War (1945–1991)
After World War II, the United States entered the Cold War, where geopolitical tensions between the U.S. and the Soviet Union led the two countries to dominate world affairs. The U.S. engaged in regime change against governments perceived to be aligned with the Soviet Union, and competed in the Space Race, culminating in the first crewed Moon landing in 1969. Domestically, the U.S. experienced economic growth, urbanization, and population growth following World War II. The civil rights movement emerged, with Martin Luther King Jr. becoming a prominent leader in the early 1960s. The counterculture movement in the U.S. brought significant social changes, including the liberalization of attitudes towards recreational drug use and sexuality as well as open defiance of the military draft and opposition to intervention in Vietnam. The late 1980s and early 1990s saw the collapse of the Warsaw Pact and the dissolution of the Soviet Union, which marked the end of the Cold War and solidified the U.S. as the world's sole superpower.
The 1990s saw the longest recorded expansion in American history, a dramatic decline in crime, and advances in technology, with the World Wide Web, the evolution of the Pentium microprocessor in accordance with Moore's Law, rechargeable lithium-ion batteries, the first gene therapy trial, and cloning all emerging and being improved upon throughout the decade. The Human Genome Project was formally launched in 1990, building of the Large Hadron Collider commenced in 1998, and Nasdaq became the first stock market in the United States to trade online. In 1994, the country expelled an Iraqi invasion force from Kuwait in the Persian Gulf War.
The September 11, 2001 attacks by the pan-Islamist militant organization Al-Qaeda led to the war on terror and subsequent military interventions in Afghanistan and Iraq. The cultural impact of the attacks was profound and long-lasting. Combined with sexual abuse scandals within churches, large-scale secularization proceeded, as many Americans were not able to reconcile the events with a benevolent higher power. The U.S. housing bubble in 2006 culminated in the Great Recession, the largest economic contraction since the Great Depression. Starting in the 2010s, political polarization increased as sociopolitical debates on cultural issues dominated political discussion. The 2020s saw the United States emerge as the leader of the AI Spring, which has led to ongoing rapid and unprecedented development in the field of artificial intelligence, as advances in transformer machine learning enabled a number of generative AI systems. The nation returned to space exploration with the Artemis Program; it plans for a crewed lunar landing and launch of the world's first planned extraterrestrial space station, both in 2025, and yearly returns to the moon thereafter. Its long-term goal is to establish a permanent base on the Moon to facilitate the feasibility of human missions to Mars.
The United States is the world's third-largest nation by land and total area behind Russia and Canada.[c] The 48 contiguous states and the District of Columbia occupy a combined area of 3,119,885 square miles (8,080,470 km2). The coastal plain of the Atlantic seaboard gives way to inland forests and rolling hills in the Piedmont plateau region.
The Appalachian Mountains and the Adirondack massif separate the East Coast from the Great Lakes and the grasslands of the Midwest. The Mississippi River System—the world's fourth longest river system—runs mainly north–south through the heart of the country. The flat, fertile prairie of the Great Plains stretches to the west, interrupted by a highland region in the southeast.
The Rocky Mountains, west of the Great Plains, extend north to south across the country, peaking at over 14,000 feet (4,300 m) in Colorado. Farther west are the rocky Great Basin and Chihuahua, Sonoran, and Mojave deserts. The Sierra Nevada and Cascade mountain ranges run close to the Pacific coast. The lowest and highest points in the contiguous United States are in the state of California, about 84 miles (135 km) apart. At an elevation of 20,310 feet (6,190.5 m), Alaska's Denali is the highest peak in the country and continent. Active volcanoes are common throughout Alaska's Alexander and Aleutian Islands, and Hawaii consists of volcanic islands. The supervolcano underlying Yellowstone National Park in the Rockies is the continent's largest volcanic feature.
With its large size and geographic variety, the United States includes most climate types. East of the 100th meridian, the climate ranges from humid continental in the north to humid subtropical in the south. The western Great Plains are semi-arid. Many mountainous areas of the American West have an alpine climate. The climate is arid in the Southwest, Mediterranean in coastal California, and oceanic in coastal Oregon, Washington, and southern Alaska. Most of Alaska is subarctic or polar. Hawaii and the southern tip of Florida are tropical, as well as its territories in the Caribbean and the Pacific.
States bordering the Gulf of Mexico are prone to hurricanes, and most of the world's tornadoes occur in the country, mainly in Tornado Alley. Overall, the United States receives more high-impact extreme weather incidents than any other country. Extreme weather became more frequent in the U.S. in the 21st century, with three times the number of reported heat waves as in the 1960s. In the American Southwest, droughts became more persistent and more severe.
Biodiversity and conservation
The U.S. is one of 17 megadiverse countries containing large numbers of endemic species: about 17,000 species of vascular plants occur in the contiguous United States and Alaska, and over 1,800 species of flowering plants are found in Hawaii, few of which occur on the mainland. The United States is home to 428 mammal species, 784 birds, 311 reptiles, 295 amphibians, and 91,000 insect species.
There are 63 national parks, and hundreds of other federally managed parks, forests, and wilderness areas, managed by the National Park Service and other agencies. About 28% of the country's land is publicly owned and federally managed, primarily in the western states. Most of this land is protected, though some is leased for industrial use, and less than one percent is used for military purposes.
Environmental issues in the United States include debates on non-renewable resources and nuclear energy, air and water pollution, biodiversity, logging and deforestation, and climate change. The U.S. Environmental Protection Agency (EPA) is the federal agency charged with addressing most environmental-related issues. The idea of wilderness has shaped the management of public lands since 1964, with the Wilderness Act. The Endangered Species Act of 1973 provides a way to protect threatened and endangered species and their habitats. The United States Fish and Wildlife Service implements and enforces the Act. As of 2020, the U.S. ranked 24th among 180 nations in the Environmental Performance Index. The country joined the Paris Agreement on climate change in 2016 and has many other environmental commitments.
Government and politics
The United States was founded on the principles of the American Enlightenment. It is a federal republic of 50 states, a federal district, five territories and several uninhabited island possessions. It is the world's oldest surviving federation, and, according to the World Economic Forum, the oldest democracy as well. It is a liberal representative democracy "in which majority rule is tempered by minority rights protected by law." The U.S. Constitution serves as the country's supreme legal document, establishing the structure and responsibilities of the federal government and its relationship with the individual states.
- The U.S. Congress, a bicameral legislature, made up of the Senate and the House of Representatives, makes federal law, declares war, approves treaties, has the power of the purse, and has the power of impeachment. The Senate has 100 members (2 from each state), elected for a six-year term. The House of Representatives has 435 members from single member congressional districts allocated to each state on the basis of population, elected for a two-year term.
- The U.S. President is the commander-in-chief of the military, can veto legislative bills before they become law (subject to congressional override), and appoints the members of the Cabinet (subject to Senate approval) and other officers, who administer and enforce federal laws and policies through their respective agencies. The president and the vice president are elected together in a presidential election. It is an indirect election, with the winner being determined by votes cast by electors of the Electoral College. The President and Vice President serve a four-year term and may be elected to the office no more than twice.
- The U.S. federal judiciary, whose judges are all appointed for life by the President with Senate approval, consists primarily of the U.S. Supreme Court, the U.S. courts of appeals, and the U.S. district courts. The U.S. Supreme Court interprets laws and overturn those they find unconstitutional. The Supreme Court is led by the chief justice of the United States. It has nine members who serve for life. The members are appointed by the sitting president when a vacancy becomes available.
In the American federal system, sovereignty is shared between two levels of government: federal and state. Each of the 50 states has territory where it shares sovereignty with the federal government. People in the states are also represented by local elected governments, which are administrative divisions of the states. States are subdivided into counties or county equivalents, and further divided into municipalities. The District of Columbia is a federal district that contains the capital of the United States, the city of Washington. The territories and the District of Columbia are administrative divisions of the federal government.
The United States has an established structure of foreign relations, and it had the world's second-largest diplomatic corps in 2019. It is a permanent member of the United Nations Security Council, and home to the United Nations headquarters. The United States is a member of the G7, G20, and OECD intergovernmental organizations. Almost all countries have embassies and many have consulates (official representatives) in the country. Likewise, nearly all nations host formal diplomatic missions with the United States, except Iran, North Korea, and Bhutan. Though Taiwan does not have formal diplomatic relations with the U.S., it maintains close unofficial relations. The United States regularly supplies Taiwan with military equipment to deter potential Chinese aggression.
The United States has a "Special Relationship" with the United Kingdom and strong ties with Canada, Australia, New Zealand, the Philippines, Japan, South Korea, Israel, and several European Union countries (France, Italy, Germany, Spain, and Poland). The U.S. works closely with its NATO allies on military and national security issues, and with nations in the Americas through the Organization of American States and the United States–Mexico–Canada Free Trade Agreement. In South America, Colombia is traditionally considered to be the closest ally of the United States. The U.S. exercises full international defense authority and responsibility for Micronesia, the Marshall Islands, and Palau through the Compact of Free Association. It has increasingly conducted strategic cooperation with India, and its ties with China have steadily deteriorated. Since 2014, the U.S. has become a key ally of Ukraine.
The President is the commander-in-chief of the United States Armed Forces and appoints its leaders, the secretary of defense and the Joint Chiefs of Staff. The Department of Defense, which is headquartered at the Pentagon near Washington, D.C., administers five of the six service branches, which are made up of the Army, Marine Corps, Navy, Air Force, and Space Force. The Coast Guard is administered by the Department of Homeland Security in peacetime and can be transferred to the Department of the Navy in wartime.
The United States spent $877 billion on its military in 2022, which is by far the largest amount of any country, making up 39% of global military spending and accounting for 3.5% of the country's GDP. The U.S. has more than 40% of the world's nuclear weapons, the second-largest amount after Russia.
The United States has the third-largest combined armed forces in the world, behind the Chinese People's Liberation Army and Indian Armed Forces. The military operates about 800 bases and facilities abroad, and maintains deployments greater than 100 active duty personnel in 25 foreign countries.
Law enforcement and crime
There are about 18,000 U.S. police agencies from local to federal level in the United States. Law in the United States is mainly enforced by local police departments and sheriff departments in their municipal or county jurisdictions. The state police departments have authority in their respective state, and federal agencies such as the Federal Bureau of Investigation (FBI) and the U.S. Marshals Service have national jurisdiction and specialized duties, such as protecting civil rights, national security and enforcing U.S. federal courts' rulings and federal laws. State courts conduct most civil and criminal trials, and federal courts handle designated crimes and appeals of state court decisions.
As of January 2023, the United States has the sixth highest per-capita incarceration rate in the world, at 531 people per 100,000; and the largest prison and jail population in the world with almost 2 million people incarcerated. An analysis of the World Health Organization Mortality Database from 2010 showed U.S. homicide rates "were 7 times higher than in other high-income countries, driven by a gun homicide rate that was 25 times higher."
The U.S. has been the world's largest economy nominally since about 1890. The U.S. gross domestic product (GDP) of $27 trillion is the largest in the world, constituting over 15% of gross world product at purchasing power parity (PPP). From 1983 to 2008, U.S. real compounded annual GDP growth was 3.3%, compared to a 2.3% weighted average for the rest of the Group of Seven. The country ranks first in the world by disposable income per capita, nominal GDP, second by GDP (PPP) after China, and eighth by GDP (PPP) per capita.
Of the world's 500 largest companies, 136 are headquartered in the U.S. The U.S. dollar is the currency most used in international transactions and is the world's foremost reserve currency, backed by the country's dominant economy, its military, the petrodollar system, and its linked eurodollar and large U.S. treasuries market. Several countries use it as their official currency and in others it is the de facto currency. It has free trade agreements with several countries, including the USMCA. The U.S. ranked second in the Global Competitiveness Report in 2019, after Singapore. While its economy has reached a post-industrial level of development, the United States remains an industrial power. As of 2018, the U.S. is the second-largest manufacturing nation after China.
New York City is the world's principal financial center, with the largest economic output, and the epicenter of the principal American metropolitan economy. The New York Stock Exchange and Nasdaq, both located in New York City, are the world's two largest stock exchanges by market capitalization and trade volume. The United States is at or near the forefront of technological advancement and innovation in many economic fields, especially in artificial intelligence; computers; pharmaceuticals; and medical, aerospace and military equipment. The nation's economy is fueled by abundant natural resources, a well-developed infrastructure, and high productivity. The largest U.S. trading partners are the European Union, Mexico, Canada, China, Japan, South Korea, the United Kingdom, Vietnam, India, and Taiwan. The United States is the world's largest importer and the second-largest exporter after China. It is by far the world's largest exporter of services.
Americans have the highest average household and employee income among OECD member states, and the fourth-highest median household income, up from sixth-highest in 2013. Wealth in the United States is highly concentrated; the richest 10% of the adult population own 72% of the country's household wealth, while the bottom 50% own just 2%. Income inequality in the U.S. remains at record highs, with the top fifth of earners taking home more than half of all income and giving the U.S. one of the widest income distributions among OECD members. The U.S. ranks first in the number of dollar billionaires and millionaires, with 735 billionaires and nearly 22 million millionaires (as of 2023). There were about 582,500 sheltered and unsheltered homeless persons in the U.S. in 2022, with 60% staying in an emergency shelter or transitional housing program. In 2018, six million children experienced food insecurity. Feeding America estimates that around one in seven, or approximately 11 million, children experience hunger and do not know where they will get their next meal or when. As of June 2018,[update] 40 million people, roughly 12.7% of the U.S. population, were living in poverty, including 13.3 million children.
The United States has a smaller welfare state and redistributes less income through government action than most other high-income countries. It is the only advanced economy that does not guarantee its workers paid vacation nationally and is one of a few countries in the world without federal paid family leave as a legal right. The United States has a higher percentage of low-income workers than almost any other developed nation, largely because of a weak collective bargaining system and lack of government support for at-risk workers.
Science, technology, and energy
The United States has been a leader in technological innovation since the late 19th century and scientific research since the mid-20th century. Methods for producing interchangeable parts and the establishment of a machine tool industry enabled America's large-scale manufacturing of consumer products in the late 19th century. In the early 20th century, factory electrification, the introduction of the assembly line, and other labor-saving techniques created the system of mass production. In 2022, the United States was the country with the second-highest number of published scientific papers. As of 2021, the U.S. ranked second by the number of patent applications, and third by trademark and industrial design applications. In 2023, the United States ranked 3rd in the Global Innovation Index.
As of 2022[update], the United States receives approximately 81% of its energy from fossil fuel and the largest source of the country's energy came from petroleum (35.8%), followed by natural gas (33.4%), renewable sources (13.3%), coal (9.8%), and nuclear power (8%). The United States constitutes less than 5% of the world's population, but consumes 17% of the world's energy. The U.S. ranks as the second-highest emitter of greenhouse gases.
Personal transportation in the United States is dominated by automobiles, which operate on a network of 4 million miles (6.4 million kilometers) of public roads, making it the longest network in the world. The Oldsmobile Curved Dash and the Ford Model T, both American cars, are considered the first mass-produced and mass-affordable cars, respectively. As of 2022, the United States is the second-largest manufacturer of motor vehicles and is home to Tesla, the world's most valuable car company. American automotive company General Motors held the title of the world's best-selling automaker from 1931 to 2008. Currently, the American automotive industry is the world's second-largest automobile market by sales, and the U.S. has the highest vehicle ownership per capita in the world, with 910 vehicles per 1000 people. The United States's rail transport network, the longest network in the world, handles mostly freight.
The American civil airline industry is entirely privately owned and has been largely deregulated since 1978, while most major airports are publicly owned. The three largest airlines in the world by passengers carried are U.S.-based; American Airlines is number one after its 2013 acquisition by US Airways. Of the world's 50 busiest passenger airports, 16 are in the United States, including the top five and the busiest, Hartsfield–Jackson Atlanta International Airport. As of 2020[update], there are 19,919 airports in the United States, of which 5,217 are designated as "public use", including for general aviation and other activities.
Of the fifty busiest container ports, four are located in the United States, of which the busiest is the Port of Los Angeles. The country's inland waterways are the world's fifth-longest, and total 41,009 km (25,482 mi).
The U.S. Census Bureau reported 331,449,281 residents as of April 1, 2020,[m] making the United States the third-most populous nation in the world, after China and India. According to the Bureau's U.S. Population Clock, on January 28, 2021, the U.S. population had a net gain of one person every 100 seconds, or about 864 people per day. In 2018, 52% of Americans age 15 and over were married, 6% were widowed, 10% were divorced, and 32% had never been married. In 2021, the total fertility rate for the U.S. stood at 1.7 children per woman, and it had the world's highest rate of children (23%) living in single-parent households in 2019.
The United States has a diverse population; 37 ancestry groups have more than one million members. White Americans with ancestry from Europe, the Middle East or North Africa, form the largest racial and ethnic group at 57.8% of the United States population. Hispanic and Latino Americans form the second-largest group and are 18.7% of the United States population. African Americans constitute the nation's third-largest ancestry group and are 12.1% of the total United States population. Asian Americans are the country's fourth-largest group, composing 5.9% of the United States population, while the country's 3.7 million Native Americans account for about 1%. In 2020, the median age of the United States population was 38.5 years.
While many languages are spoken in the United States, English is overwhelmingly the most commonly spoken in a majority of the country. Although there is no official language at the federal level, some laws—such as U.S. naturalization requirements—standardize English, and most states have declared English as the official language. Three states and four U.S. territories have recognized local or indigenous languages in addition to English, including Hawaii (Hawaiian), Alaska (twenty Native languages),[n] South Dakota (Sioux), American Samoa (Samoan), Puerto Rico (Spanish), Guam (Chamorro), and the Northern Mariana Islands (Carolinian and Chamorro). In Puerto Rico, Spanish is more widely spoken than English.
According to the American Community Survey, in 2010 some 229 million people (out of the total U.S. population of 308 million) spoke only English at home. More than 37 million spoke Spanish at home, making it the second most commonly used language. Other languages spoken at home by one million people or more include Chinese (2.8 million), Tagalog (1.6 million), Vietnamese (1.4 million), French (1.3 million), Korean (1.1 million), and German (1 million).
America's immigrant population, numbering more than 50 million, is by far the world's largest in absolute terms. In 2022, there were 87.7 million immigrants and U.S.-born children of immigrants in the United States, accounting for nearly 27% of the overall U.S. population. In 2017, out of the U.S. foreign-born population, some 45% (20.7 million) were naturalized citizens, 27% (12.3 million) were lawful permanent residents, 6% (2.2 million) were temporary lawful residents, and 23% (10.5 million) were unauthorized immigrants. In 2019, the top countries of origin for immigrants were Mexico (24% of immigrants), India (6%), China (5%), the Philippines (4.5%), and El Salvador (3%). The United States has led the world in refugee resettlement for decades, admitting more refugees than the rest of the world combined.
Religious practice is widespread, among the most diverse in the world, and profoundly vibrant. An overwhelming majority of Americans believe in a higher power or spiritual force, engage in spiritual practices such as prayer, and consider themselves religious or spiritual. The country has the world's largest Christian population. A majority of the global Jewish population lives in the United States, as measured by the Law of Return. Other notable faiths include Buddhism, Hinduism, Islam, many New Age movements, and Native American religions. Religious practice varies significantly by region. In the "Bible Belt", located within the Southern United States, evangelical Protestantism plays a significant role culturally. New England and the Western United States tend to be less religious, with Mormonism—a Restorationist movement started in New York in the 19th century—uniquely being the predominant religious affiliation in the state of Utah. While there was a secularization trend after 2001, most indicators of religious belief and interest have remained stable since the mid-2010s.
About 82% of Americans live in urban areas, including suburbs; about half of those reside in cities with populations over 50,000. In 2022, 333 incorporated municipalities had populations over 100,000, nine cities had more than one million residents, and four cities (New York City, Los Angeles, Chicago, and Houston) had populations exceeding two million. Many U.S. metropolitan populations are growing rapidly, particularly in the South and West.
|2||Los Angeles||West||12,997,353||12||Riverside–San Bernardino||West||4,653,105|
|6||Washington, D.C.||South||6,356,434||16||Minneapolis–Saint Paul||Midwest||3,690,512|
In a preliminary report, the Centers for Disease Control and Prevention (CDC) announced that U.S. life expectancy at birth was 76.4 years in 2021 (73.2 years for men and 79.1 years for women), down 0.9 years from 2020. The chief causes listed were the COVID-19 pandemic, accidents, drug overdoses, heart and liver disease, and suicides. Life expectancy was highest among Asians and Hispanics and lowest among Black and American Indian–Alaskan Native (AIAN) peoples. Starting in 1998, the life expectancy in the U.S. fell behind that of other wealthy industrialized countries, and Americans' "health disadvantage" gap has been increasing ever since. The U.S. has one of the highest suicide rates among high-income countries. Approximately one-third of the U.S. adult population is obese and another third is overweight. The U.S. healthcare system far outspends that of any other nation, measured both in per capita spending and as a percentage of GDP, but attains worse healthcare outcomes when compared to peer nations for reasons that are debate. The United States is the only developed nation without a system of universal healthcare, and a significant proportion of the population that does not carry health insurance. Government-funded healthcare coverage for the poor (Medicaid) and for those age 65 and older (Medicare) is available to Americans who meet the programs' income or age qualifications. In 2010, former President Obama passed the Patient Protection and Affordable Care Act.[o]
American public education is operated by state and local governments and regulated by the United States Department of Education through restrictions on federal grants. In most states, children are required to attend school from the age of five or six (beginning with kindergarten or first grade) until they turn 18 (generally bringing them through twelfth grade, the end of high school); some states allow students to leave school at 16 or 17. Of Americans 25 and older, 84.6% graduated from high school, 52.6% attended some college, 27.2% earned a bachelor's degree, and 9.6% earned graduate degrees. The basic literacy rate is near-universal. The country has the most Nobel Prize winners in history, with 411 (having won 413 awards).
The United States has many private and public institutions of higher education including many of the world's top universities, as listed by various ranking organizations, are in the United States, including 19 of the top 25. There are local community colleges with generally more open admission policies, shorter academic programs, and lower tuition. The U.S. spends more on education per student than any nation in the world, spending an average of $12,794 per year on public elementary and secondary school students in the 2016–2017 school year.
As for public expenditures on higher education, the U.S. spends more per student than the OECD average, and more than all nations in combined public and private spending. Despite some student loan forgiveness programs in place, student loan debt has increased by 102% in the last decade, and exceeded 1.7 trillion dollars as of 2022.
Culture and society
Americans have traditionally been characterized by a unifying political belief in an "American creed" emphasizing liberty, equality under the law, democracy, social equality, property rights, and a preference for limited government. Culturally, the country has been described as having the values of individualism and personal autonomy, having a strong work ethic, competitiveness, and voluntary altruism towards others. According to a 2016 study by the Charities Aid Foundation, Americans donated 1.44% of total GDP to charity, the highest rate in the world by a large margin. Part of both the Anglosphere and Western World, the United States is also home to a wide variety of ethnic groups, traditions, and values, and exerts immense cultural influence globally, with the phenomenon being termed Americanization. As such, the U.S. is considered a cultural superpower.
Nearly all present Americans or their ancestors came from Eurafrasia ("the Old World") within the past five centuries. Mainstream American culture is a Western culture largely derived from the traditions of European immigrants with influences from many other sources, such as traditions brought by slaves from Africa. More recent immigration from Asia and especially Latin America has added to a cultural mix that has been described as a homogenizing melting pot, and a heterogeneous salad bowl, with immigrants contributing to, and often assimilating into, mainstream American culture. The American Dream, or the perception that Americans enjoy high social mobility, plays a key role in attracting immigrants. Whether this perception is accurate has been a topic of debate. While mainstream culture holds that the United States is a classless society, scholars identify significant differences between the country's social classes, affecting socialization, language, and values. Americans tend to greatly value socioeconomic achievement, but being ordinary or average is promoted by some as a noble condition as well.
The United States is considered to have the strongest protections of free speech of any country under the First Amendment, which protects flag desecration, hate speech, blasphemy, and lese-majesty as forms of protected expression. A 2016 Pew Research Center poll found that Americans were the most supportive of free expression of any polity measured. They are the "most supportive of freedom of the press and the right to use the Internet without government censorship." It is a socially progressive country with permissive attitudes surrounding human sexuality. LGBT rights in the United States are among the most advanced in the world.
Colonial American authors were influenced by John Locke and various other Enlightenment philosophers. Before and shortly after the Revolutionary War, the newspaper rose to prominence, filling a demand for anti-British national literature. Led by Ralph Waldo Emerson and Margaret Fuller in New England, transcendentalism branched from Unitarianism as the nation's first major intellectual movement. During the nineteenth-century American Renaissance, writers like Walt Whitman and Harriet Beecher Stowe established a distinctive American literary tradition. As literacy rates rose, periodicals published more stories centered around industrial workers, women, and the rural poor. Naturalism, regionalism, and realism—the latter associated with Mark Twain—were the major literary movements of the period.
While modernism generally took on an international character, modernist authors working within the United States more often rooted their work in specific regions, peoples, and cultures. Following the Great Migration to northern cities, African-American and black West Indian authors of the Harlem Renaissance developed an independent tradition of literature that rebuked a history of inequality and celebrated black culture. An important cultural export during the Jazz Age, these writings were a key influence on the négritude philosophy. In the 1950s, an ideal of homogeneity led many authors to attempt to write the Great American Novel, while the Beat Generation rejected this conformity, using styles that elevated the impact of the spoken word over mechanics to describe drug use, sexuality, and the failings of society. Contemporary literature is more pluralistic than in previous eras, with the closest thing to a unifying feature being a trend toward self-conscious experiments with language.
Media is broadly uncensored, with the First Amendment providing significant protections, as reiterated in New York Times Co. v. United States. The four major broadcasters in the U.S. are the National Broadcasting Company (NBC), Columbia Broadcasting System (CBS), American Broadcasting Company (ABC), and Fox Broadcasting Company (FOX). The four major broadcast television networks are all commercial entities. Cable television offers hundreds of channels catering to a variety of niches. As of 2021[update], about 83% of Americans over age 12 listen to broadcast radio, while about 41% listen to podcasts. As of September 30, 2014[update], there are 15,433 licensed full-power radio stations in the U.S. according to the U.S. Federal Communications Commission (FCC). Much of the public radio broadcasting is supplied by NPR, incorporated in February 1970 under the Public Broadcasting Act of 1967.
Globally-recognized newspapers in the United States include The Wall Street Journal, The New York Times, The Washington Post, and USA Today. More than 800 publications are produced in Spanish, the second most commonly used language in the United States behind English. With very few exceptions, all the newspapers in the U.S. are privately owned, either by large chains such as Gannett or McClatchy, which own dozens or even hundreds of newspapers; by small chains that own a handful of papers; or, in a situation that is increasingly rare, by individuals or families. Major cities often have alternative newspapers to complement the mainstream daily papers, such as The Village Voice in New York City and LA Weekly in Los Angeles. The five most popular websites used in the U.S. are Google, YouTube, Amazon, Yahoo, and Facebook, with all of them being American companies.
As of 2022[update], the video game market of the United States is the world's largest by revenue. Major video game publishers and developers headquartered in the United States are Sony Interactive Entertainment, Take-Two, Activision Blizzard, Electronic Arts, Xbox Game Studios, Bethesda Softworks, Epic Games, Valve, Warner Bros., Riot Games, and others. There are 444 publishers, developers, and hardware companies in California alone.
The United States is well known for its cinema and theater. Mainstream theater in the United States derives from the old European theatrical tradition and has been heavily influenced by the British theater. The central hub of the American theater scene is Manhattan, with its divisions of Broadway, off-Broadway, and off-off-Broadway. Many movie and television stars have gotten their big break working in New York productions. Outside New York City, many cities have professional regional or resident theater companies that produce their own seasons. The biggest-budget theatrical productions are musicals. U.S. theater has an active community theater culture.
The Tony Awards recognizes excellence in live Broadway theatre and are presented at an annual ceremony in Manhattan. The awards are given for Broadway productions and performances. One is also given for regional theatre. Several discretionary non-competitive awards are given as well, including a Special Tony Award, the Tony Honors for Excellence in Theatre, and the Isabelle Stevenson Award.
The United States and China collectively account for the majority of global apparel demand. Apart from professional business attire, American fashion is eclectic and predominantly informal. While Americans' diverse cultural roots are reflected in their clothing, particularly those of recent immigrants, sneakers, jeans, T-shirts, and baseball caps are emblematic of American styles. New York City is considered to be one of the "big four" global fashion capitals, along with Paris, Milan, and London. A study demonstrated that general proximity to Manhattan's Garment District has been synonymous with American fashion since its inception in the early 20th century.
The headquarters of many leading designer labels such as Ralph Lauren Corporation, Calvin Klein, J.Crew, Michael Kors, Alexander Wang, Vera Wang, Marc Jacobs, Oscar de la Renta, Diane von Furstenberg, Donna Karan, and Victoria's Secret reside in Manhattan. Labels such as Abercrombie & Fitch and Eckō Unltd. cater to various niche markets, such as pre teens. There has been a trend in the United States fashion towards sustainable clothing. New York Fashion Week is one of the most influential fashion weeks in the world, and occurs twice a year.
The United States has the world's largest music market with a total retail value of $15.9 billion in 2022. Most of the world's major record companies are based in the U.S.; they are represented by the Recording Industry Association of America (RIAA).
American folk music encompasses numerous music genres, variously known as traditional music, traditional folk music, contemporary folk music, or roots music. Many traditional songs have been sung within the same family or folk group for generations, and sometimes trace back to such origins as the British Isles, Mainland Europe, or Africa. The rhythmic and lyrical styles of African-American music have also influenced American music at large. Banjos were brought to America through the slave trade. Minstrel shows incorporating the instrument into their acts led to its increased popularity and widespread production in the 19th century.
Elements from folk idioms such as the blues and what is known as old-time music were adopted and transformed into popular genres with global audiences. Jazz grew from blues and ragtime in the early 20th century, developing from the innovations and recordings of composers such as W.C. Handy and Jelly Roll Morton. Louis Armstrong and Duke Ellington increased its popularity early in the 20th century. Country music developed in the 1920s, bluegrass and rhythm and blues in the 1940s.
First invented in the 1930s, and mass-produced by the 1940s, the electric guitar had an enormous influence on popular music, in particular due to the development of rock and roll, pioneered by Elvis Presley and Chuck Berry, among others, in the mid-1950s. Rock bands such as Metallica, the Eagles, and Aerosmith are among the highest grossing musical acts in worldwide sales. In the 1960s, Bob Dylan emerged from the folk revival to become one of the country's most celebrated songwriters. Mid-20th-century American pop stars such as Bing Crosby, Frank Sinatra, and Elvis Presley became global celebrities, as have artists of the late 20th century, such as Prince, Michael Jackson, Madonna, Whitney Houston, and Mariah Carey, and of the early 21st century, such as Taylor Swift, Eminem, Ariana Grande, Britney Spears, Justin Timberlake, and Bruno Mars. The musical forms of punk and hip hop both originated in the United States. American professional opera singers have reached the highest level of success in that form, including Renée Fleming, Leontyne Price, Beverly Sills, Nelson Eddy, and many others.
In the visual arts, the Hudson River School was a mid-19th-century movement in the tradition of European naturalism. The 1913 Armory Show in New York City, an exhibition of European modernist art, shocked the public and transformed the U.S. art scene. Georgia O'Keeffe, Marsden Hartley, and others experimented with new, individualistic styles, which would become known as American modernism. Major artistic movements such as the abstract expressionism of Jackson Pollock and Willem de Kooning and the pop art of Andy Warhol and Roy Lichtenstein developed largely in the United States. Major photographers include Alfred Stieglitz, Edward Steichen, Dorothea Lange, Edward Weston, James Van Der Zee, Ansel Adams, and Gordon Parks. The Metropolitan Museum of Art is the largest art museum in the United States. The tide of modernism and then postmodernism has brought global fame to American architects, including Frank Lloyd Wright, Philip Johnson, and Frank Gehry.
The U.S. film industry has a worldwide influence and following. Hollywood, a district in northern Los Angeles, the nation's second-most populous city, is the leader in motion picture production and the most recognizable movie industry in the world. The major film studios of the United States are the primary source of the most commercially successful and most ticket-selling movies in the world. Since the early 20th century, the U.S. film industry has largely been based in and around Hollywood, although in the 21st century an increasing number of films are not made there, and film companies have been subject to the forces of globalization. The Academy Awards, popularly known as the Oscars, have been held annually by the Academy of Motion Picture Arts and Sciences since 1929, and the Golden Globe Awards have been held annually since January 1944.
The industry enjoyed its golden years, in what is commonly referred to as the "Golden Age of Hollywood", from the early sound period until the early 1960s, with screen actors such as John Wayne and Marilyn Monroe becoming iconic figures. In the 1970s, "New Hollywood" or the "Hollywood Renaissance" was defined by grittier films influenced by French and Italian realist pictures of the post-war period. The 21st century was marked by the rise of American streaming platforms, which came to rival traditional cinema.
Early settlers were introduced by Native Americans to such indigenous, non-European foods as turkey, sweet potatoes, corn, squash, and maple syrup. Of the most enduring and pervasive examples are variations of the native dish called succotash. Early settlers and later immigrants combined these with foods they had known, such as wheat flour, beef, and milk to create a distinctive American cuisine. New World crops, especially corn, potatoes, and the main course turkey, are part of a shared national menu on Thanksgiving: when many Americans make or purchase traditional dishes to celebrate the occasion.
Characteristic American dishes such as apple pie, fried chicken, doughnuts, french fries, macaroni and cheese, ice cream, pizza, hamburgers, and hot dogs derive from the recipes of various immigrant groups. Mexican dishes such as burritos and tacos preexisted the United States in areas later annexed from Mexico, and pasta dishes freely adapted from Italian sources are all widely consumed.
The American fast food industry, the world's first and largest, pioneered the drive-through format in the 1940s and is often viewed as being a symbol of U.S. marketing dominance. American companies such as McDonald's, Burger King, Pizza Hut, Kentucky Fried Chicken, and Domino's Pizza, among many others, have numerous outlets around the world.
The most popular spectator sports in the U.S. are American football, basketball, baseball, soccer, and ice hockey. While most major U.S. sports such as baseball and American football have evolved out of European practices, basketball, volleyball, skateboarding, and snowboarding are American inventions, many of which have become popular worldwide. Lacrosse and surfing arose from Native American and Native Hawaiian activities that predate European contact. The market for professional sports in the United States was approximately $69 billion in July 2013, roughly 50% larger than that of all of Europe, the Middle East, and Africa combined.
American football is by several measures the most popular spectator sport in the United States; the National Football League (NFL) has the highest average attendance of any sports league in the world, and the Super Bowl is watched by tens of millions globally. Baseball has been regarded as the U.S. national sport since the late 19th century, with Major League Baseball being the top league. Basketball, soccer and ice hockey are the country's next three most popular professional team sports, with the top leagues being the National Basketball Association and the National Hockey League, which are the premier leagues worldwide for these sports. The most-watched individual sports in the U.S. are golf and auto racing, particularly NASCAR and IndyCar.
On the collegiate level, earnings for the member institutions exceed $1 billion annually, and college football and basketball attract large audiences, as the NCAA Final Four is one of the most watched national sporting events. In many respects, the intercollegiate sports level serves as a feeder system to the professional level, as the elite college athletes are chosen to compete at the next level. This system differs greatly from nearly all other countries in the world, which generally have government-funded sports organizations that serve as a feeder system for professional competition.
Eight Olympic Games have taken place in the United States. The 1904 Summer Olympics in St. Louis, Missouri, were the first-ever Olympic Games held outside of Europe. The Olympic Games will be held in the U.S. for a ninth time when Los Angeles hosts the 2028 Summer Olympics. U.S. athletes have won a total of 2,959 medals (1,173 gold) at the Olympic Games, by far the most of any country.
In international soccer, the men's national soccer team qualified for eleven World Cups, and the women's national team has won the FIFA Women's World Cup and Olympic soccer tournament four times each. The United States hosted the 1994 FIFA World Cup and will co-host, along with Canada and Mexico, the 2026 FIFA World Cup.
- 30 of 50 states recognize only English as an official language. The state of Hawaii recognizes both Hawaiian and English as official languages, the state of Alaska officially recognizes 20 Alaska Native languages alongside English, and the state of South Dakota recognizes O'ceti Sakowin as an official language.
- The historical and informal demonym Yankee has been applied to Americans, New Englanders, or northeasterners since the 18th century.
- At 3,531,900 sq mi (9,147,590 km2), the United States is the third-largest country in the world by land area, behind Russia and China. By total area (land and water), it is the third-largest, behind Russia and Canada, if its coastal and territorial water areas are included. However, if only its internal waters are included (bays, sounds, rivers, lakes, and the Great Lakes), the U.S. is the fourth-largest, after Russia, Canada, and China.
Coastal/territorial waters included: 3,796,742 sq mi (9,833,517 km2)
Only internal waters included: 3,696,100 sq mi (9,572,900 km2)
- Excludes Puerto Rico and the other unincorporated islands because they are counted separately in U.S. census statistics.
- After adjustment for taxes and transfers
- See Time in the United States for details about laws governing time zones in the United States.
- See Date and time notation in the United States.
- A single jurisdiction, the U.S. Virgin Islands, uses left-hand traffic.
- The five major territories are American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the United States Virgin Islands. There are eleven smaller island areas without permanent populations: Baker Island, Howland Island, Jarvis Island, Johnston Atoll, Kingman Reef, Midway Atoll, and Palmyra Atoll. U.S. sovereignty over Bajo Nuevo Bank, Navassa Island, Serranilla Bank, and Wake Island is disputed.
- The United States has a maritime border with the British Virgin Islands, a British territory, since the BVI borders the U.S. Virgin Islands. BVI is a British Overseas Territory but itself is not a part of the United Kingdom. Puerto Rico has a maritime border with the Dominican Republic. American Samoa has a maritime border with the Cook Islands, maintained under the Cook Islands–United States Maritime Boundary Treaty. American Samoa has maritime borders with independent Samoa and Niue.
- The U.S. Census Bureau provides a continuously updated but unofficial population clock in addition to its decennial census and annual population estimates: www.census.gov/popclock
- New Hampshire, Massachusetts, Connecticut, Rhode Island, New York, New Jersey, Pennsylvania, Delaware, Maryland, Virginia, North Carolina, South Carolina, and Georgia
- This figure, like most official data for the United States as a whole, excludes the five unincorporated territories (Puerto Rico, Guam, the U.S. Virgin Islands, American Samoa, and the Northern Mariana Islands) and minor island possessions.
- Inupiaq, Siberian Yupik, Central Alaskan Yup'ik, Alutiiq, Unanga (Aleut), Denaʼina, Deg Xinag, Holikachuk, Koyukon, Upper Kuskokwim, Gwichʼin, Tanana, Upper Tanana, Tanacross, Hän, Ahtna, Eyak, Tlingit, Haida, and Tsimshian
- Also known less formally as Obamacare
- 36 U.S.C. § 302
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- Areas of the 50 states and the District of Columbia but not Puerto Rico nor other island territories per "State Area Measurements and Internal Point Coordinates". Census.gov. August 2010. Retrieved March 31, 2020.
reflect base feature updates made in the MAF/TIGER database through August, 2010.
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[...]which also contains its near neighbor, the British Virgin Islands.
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- Touba, Mariam (November 5, 2014) Who Coined the Phrase 'United States of America'? You May Never Guess New-York Historical Society Museum & Library
- Fay, John (July 15, 2016) The forgotten Irishman who named the 'United States of America' "According to the NY Historical Society, Stephen Moylan was the man responsible for the earliest documented use of the phrase 'United States of America'. But who was Stephen Moylan?" IrishCentral.com
- ""To the inhabitants of Virginia", by A PLANTER. Dixon and Hunter's. April 6, 1776, Williamsburg, Virginia. The letter is also included in Peter Force's American Archives". The Virginia Gazette. Vol. 5, no. 1287. Archived from the original on December 19, 2014.
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