List of state highways in Iowa

alt1=Primary Road 6 route markeralt2=1926 Iowa 16 route markeralt3=1961 Iowa 136 route marker route markeralt4=Iowa 330 route marker
Highway markers from different years
Highway names
InterstatesInterstate nn (I-nn)
US HighwaysU.S. Highway nn (US nn)
StateIowa nn
System links

State highways in the U.S. state of Iowa are owned and maintained by the Iowa Department of Transportation.

State highways[edit]

Number Length (mi)[1][2] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
No. 1 236[3] 380 Missouri state line near Lamoni Minnesota state line near Northwood 01920-01-011920 01926-01-011926 Jefferson Highway through Iowa; replaced by US 65 and US 69
Iowa 1 119.268 191.943 Iowa 2 south of Keosauqua US 151 south of Anamosa 01926-01-011926 current
Iowa 2 233.80[4] 376.26 US 6 near Lewis IL 2 at Muscatine 01920-01-011920 01939-01-011939 Renumbered Iowa 92 (renumbering approved 1938)
Iowa 2 251.376 404.550 N-2 at Nebraska City, Neb. US 61 at Fort Madison 01941-01-011941 current Formerly Iowa 3
Iowa 3 267.07[4] 429.81 N-2 at Nebraska City, Neb. IL 9 at Fort Madison 01920-01-011920 01941-01-011941 Renumbered Iowa 2
Iowa 3 323.102 519.982 SD 50 near Westfield Northwest Arterial at Dubuque 01945-01-011945 current Replaced part of Iowa 5, all of Iowa 221, and part of Iowa 10
Iowa 4 29.70[5] 47.80 US 59 / Iowa 141 at Denison Iowa 175 at Odebolt 01920-01-011920 01968-12-311968 Renumbered Iowa 39
Iowa 4 146.343 235.516 Iowa 44 in Panora MN 4 near Estherville 01969-01-011969 current Formerly Iowa 17
Iowa 5 77.64[5] 124.95 Iowa 3 near Aurelia US 169 at Fort Dodge 01920-01-011920 01968-12-311968 Renumbered Iowa 7
Iowa 5 103.540 166.631 Route 5 south of Cincinnati I-35 near West Des Moines 01969-01-011969 current Formerly portion of Iowa 60
No. 6 369[3] 594 Nebraska state line at Council Bluffs Illinois state line at Clinton 01920-01-011920 01926-01-011926 Lincoln Highway through Iowa; replaced by US 30
Iowa 6 104 167 Route 5 near Cincinnati US 32 in Des Moines 01926-01-011926 01931-01-011931 Formerly No. 17 and No. 59; became part of Iowa 60 when US 6 extended into Iowa
Iowa 7 140.69[4] 226.42 US 6 at Council Bluffs City US 6 in Des Moines 01920-01-011920 01939-01-011939 Replaced by an extended Iowa 64
Iowa 7 0.47[6] 0.76 Iowa 99 in Oakville Oakville 01955-01-011955 01957-01-011957 Renumbered Iowa 407; spur route
Iowa 7 24.18[5] 38.91 I-29 / US 77 in Sioux City Iowa 3 near Brunsville 01957-01-011957 01968-12-311968 Formerly Iowa 29; portion became Iowa 985
Iowa 7 73.661 118.546 Iowa 3 near Aurelia US 169 at Fort Dodge 01969-01-011969 current Formerly Iowa 5
No. 8 283[3] 455 No. 6 in Council Bluffs Illinois state line at Burlington 01920-01-011920 01926-01-011926 Replaced by US 34
Iowa 8 13.961 22.468 US 63 in Traer US 218 near Garrison 01926-01-011926 current
Iowa 9 295.088 474.898 SD 42 near Larchwood WIS 82 at Lansing 01920-01-011920 current
Iowa 10 104.512 168.196 SD 46 near Hawarden Iowa 4 at Havelock 01920-01-011920 current
Iowa 11 96.60[4] 155.46 US 151 / Iowa 64 in Cedar Rapids US 52 / Iowa 24 in Calmar 01920-01-011920 01941-01-011941 Replaced by Iowa 150, which was proposed to become part of US 150
Iowa 12 46.274 74.471 US 20 / US 75 at Sioux City Iowa 10 in Hawarden 01920-01-011920 current Signed as US 20 Bus through Sioux City
Iowa 13 85.235 137.172 US 30 / US 151 near Bertram US 52 near Froelich 01920-01-011920 current
Iowa 14 187.838 302.296 Iowa 2 at Corydon US 18 / US 218 Bus in Charles City 01920-01-011920 current
Iowa 15 111 179 US 30 in Ames Minnesota state line near Lake Mills 01920-01-011920 01935-01-011935 Replaced by US 69
Iowa 15 14.92[5] 24.01 Iowa 137 at Eddyville US 63 in Ottumwa 01937-01-011937 01968-12-311968 Renumbered Iowa 23
Iowa 15 4.655 7.491 Route 15 south of Milton Iowa 2 at Milton 01969-01-011969 02003-01-012003 Formerly Iowa 23
Iowa 15 63.578 102.319 Iowa 3 near Pocahontas MN 15 near Armstrong 01969-01-011969 current Formerly Iowa 44
Iowa 16 239 385 Missouri state line near Redding Minnesota state line near Ledyard 01920-01-011920 01930-01-011930 Replaced by US 169
Iowa 16 65.488 105.393 US 34 near Agency US 61 at Wever 01930-01-011930 current
Iowa 17 147.48[5] 237.35 Iowa 64 in Panora MN 4 near Estherville 01920-01-011920 01968-12-311968 Renumbered Iowa 4
Iowa 17 102.789 165.423 Iowa 141 at Granger US 18 near Wesley 01969-01-011969 current Formerly portion of Iowa 60
No. 18 148 238 Missouri state line at Braddyville No. 23 at Sac City 01920-01-011920 01926-01-011926 Replaced by US 71
No. 19 302 486 South Dakota state line near Inwood Wisconsin state line at Lansing 01920-01-011920 01926-01-011926 East end truncated to US 75 for a month in 1926; replaced by US 18
Iowa 19 2.44[6] 3.93 Backbone State Park Iowa 3 / Iowa 13 near Strawberry Point 01927-01-011927 01957-01-011957 Renumbered Iowa 410
No. 20 324[3] 521 Illinois state line at Keokuk Minnesota state line near Burr Oak 01920-01-011920 01926-01-011926 Replaced by US 61 and US 55
Iowa 21 115 185 Minnesota state line near Allendorf Iowa 141 near Denison 01920-01-011920 01934-01-011934 Replaced by Iowa 73 (proposed US 73)
Iowa 21 97.152 156.351 Iowa 149 near Hedrick US 20 / Iowa 27 at Waterloo 01934-01-011934 current Formerly ended at Iowa 92; extended south in 1980
No. 22 34[3] 55 No. 5 at Le Mars Minnesota state line north of Rock Rapids 01920-01-011920 01926-01-011926 Replaced by US 75
Iowa 22 97.905 157.563 Iowa 21 near Thornburg US 61 at Davenport 01926-01-011926 current
No. 23 130[3] 210 South Dakota state line at Sioux City No. 16 at Fort Dodge 01920-01-011920 01926-01-011926 Replaced by US 20
Iowa 23 4.78[5] 7.69 Route 15 south of Milton Iowa 2 at Milton 01926-01-011926 01968-12-311968 Formerly part of No. 11; renumbered Iowa 15
Iowa 23 14.316 23.039 US 63 in Ottumwa Iowa 137 at Eddyville 01969-01-011969 01997-01-011997 Formerly Iowa 15; partially replaced by US 63
Iowa 23 16.022 25.785 Iowa 92 at Oskaloosa Iowa 149 near Fremont 01997-01-011997 current Formerly US 63
Iowa 24 127 204 US 71 near Lyman US 63 in Oskaloosa 01920-01-011920 01927-01-011927 Replaced by an extended Iowa 2
Iowa 24 27.546 44.331 US 18 / US 63 in New Hampton US 52 / Iowa 150 in Calmar 01928-01-011928 current
No. 25 20 32 No. 15 / No. 24 at Winterset No. 2 / No. 17 at Adel 01920-01-011920 01926-01-011926 Replaced by relocated Iowa 16
Iowa 25 103.419 166.437 Iowa 2 near Benton US 30 near Scranton 01926-01-011926 current Continued south to the Missouri state line until 1978, and to Blockton until 1980
Iowa 26 10 16 US 18 near Rock Valley US 18 near Rock Valley 01920-01-011920 01930-01-011930 Replaced by relocated US 18 (portions were cancelled in exchange for relocated US 18)
Iowa 26 9.52[5] 15.32 US 18 in Inwood Iowa 9 near Larchwood 01930-01-011930 01968-12-311968 Renumbered Iowa 182
Iowa 26 11.370 18.298 Iowa 9 in Lansing MN 26 at New Albin 01969-01-011969 current Formerly Iowa 182
Iowa 27 21.2 34.1 Iowa 12 in Akron US 75 in Le Mars 01920-01-011920 01929-01-011929 Replaced by an extended Iowa 5
Iowa 27 11 18 Nebraska border US 30 / US 75 in Missouri Valley 01929-01-011929 01930-01-011930 Renumbered Iowa 130
Iowa 27 6.86[7] 11.04 Alvord US 75 near Rock Rapids 01930-01-011930 01980-01-011980 Spur route; originally from US 75 to George

Iowa 27 		281.689 453.335 Route 27 near Wayland, Mo. I-35 at the Minnesota state line 02001-01-012001 current Avenue of the Saints
No. 28 72[3] 116 No. 6 / No. 11 in Cedar Rapids No. 5 / No. 20 in Dubuque 01920-01-011920 01926-01-011926 Replaced by US 161
Iowa 28 21.613 34.783 Iowa 92 at Martensdale I-35 / I-80 at Johnston 01926-01-011926 current Previously ended at Iowa 5; extended to US 6 in 1980, and to I-80 in 1991
Iowa 29 22.06[6] 35.50 I-29 / US 77 in Sioux City Iowa 3 near Brunsville 01920-01-011920 01957-01-011957 Renumbered Iowa 7 when I-29 was designated
No. 30 25 40 No. 23 at Moville No. 5 at Remsen 01920-01-011920 01926-01-011926 Renumbered Iowa 140
Iowa 31 38.504 61.966 US 59 near Quimby Iowa 141 near Smithland 01920-01-011920 current
No. 32 5 8.0 No. 5 near Cleghorn Cleghorn 01920-01-011920 01926-01-011926 Renumbered Iowa 145
Iowa 32 7.68 12.36 Iowa 9 near Spirit Lake US 71 near Milford 01934-01-011934 01981-01-011981 extended and renumbered Iowa 86 to match Minnesota
Iowa 32 5.101[7] 8.209 US 20 at Dubuque US 52 / Iowa 3 at Sageville 01995-01-011995 02021-01-012021 Turned over to Dubuque after the US 52 Southwest Arterial opened
Iowa 33 3.4 5.5 Meriden Iowa 5 01920-01-011920 01930-01-011930 Became a county road (now L51) due to rerouting of Iowa 5 between Iowa 143 and Cherokee
Iowa 33 55.95[5] 90.04 US 75 at Le Mars MN 60 at Bigelow, Minn. 01930-01-011930 01968-12-311968 Renumbered Iowa 60
No. 34 68 109 No. 4 at Denison No. 12 at Sioux City 01920-01-011920 01926-01-011926 Renumbered Iowa 141
Iowa 35 49.00[8] 78.86 Iowa 37 near Turin US 71 near Odebolt 01920-01-011920 01948-01-011948 Replaced by an extended Iowa 175
Iowa 35 0.23[6] 0.37 US 18 near Garner Garner 01954-01-011954 01957-01-011957 Spur route; renumbered Iowa 409 when I-35 was designated
Iowa 36 2.983 4.801 Wall Lake US 71 near Wall Lake 01920-01-011920 02003-01-012003 Spur route; now County Roads M64 (north-south section) and D59 (east-west section)
Iowa 37 40.321 64.890 Iowa 175 near Turin US 59 near Earling 01920-01-011920 current Continued east to Irwin until 1982
Iowa 38 98.941 159.230 US 61 Bus / Iowa 92 in Muscatine Iowa 3 near Edgewood 01920-01-011920 current
Iowa 39 11.68[5] 18.80 US 30 near Logan Iowa 64 / Iowa 191 at Portsmouth 01920-01-011920 01968-12-311968 Renumbered Iowa 44
Iowa 39 24.321 39.141 US 59 at Denison Iowa 175 at Odebolt 01969-01-011969 current Formerly Iowa 4
No. 40 262[3] 422 No. 20 in Keokuk Minnesota state line near Mona 01920-01-011920 01926-01-011926 Replaced by US 161, US 20, US 30, and US 218; the entire route is now US 218
Iowa 40 3.524 5.671 Allerton Iowa 2 near Corydon 01926-01-011926 02003-01-012003 Spur route; now County Road S26
Iowa 41 1.827 2.940 Malvern US 34 near Malvern 01920-01-011920 02003-01-012003 Spur route; now County Road L63
Iowa 42 4.18 6.73 US 275 / Iowa 2 near Riverton Riverton 01920-01-011920 01980-12-011980 Spur route; now County Road J46
Iowa 43 1.75 2.82 Ringsted Iowa 15 near Ringsted 01920-01-011920 01980-01-011980 Spur route; now a local road and County Road A34
Iowa 44 63.95[5] 102.92 Iowa 3 near Pocahontas MN 15 near Armstrong 01920-01-011920 01968-12-311968 Renumbered Iowa 15
Iowa 44 104.524 168.215 US 30 near Logan Iowa 141 at Grimes 01969-01-011969 current Formerly Iowa 39 and Iowa 64
Iowa 45 1.324 2.131 Manilla Iowa 141 near Manilla 01920-01-011920 02003-01-012003 Spur route; now County Road M65
Iowa 46 64.84[4] 104.35 US 59 near Denison Iowa 17 (now Iowa 144) in Perry 01920-01-011920 01941-01-011941 Originally a double spur route; replaced by an extended Iowa 141
Iowa 46 4.34 6.98 Iowa 90 in Des Moines Iowa 28 (now Army Post Road) in Des Moines 01942-01-011942 01950-01-011950 Now 9th Street, Mulberry Street, and 7th Street
Iowa 46 6.57[9] 10.57 Iowa 5 near Avon Iowa 163 in Des Moines 01953-01-011953 01998-01-011998 Now city streets
Iowa 47 13 21 Iowa 287 in Farnhamville US 169 near Harcourt 01920-01-011920 01940-01-011940 Spur route; replaced by an extended Iowa 175
Iowa 47 0.82 1.32 Iowa 14 near Allison Allison 01941-01-011941 01980-01-011980 Spur route; now 7th Street
Iowa 48 47.919 77.118 US 59 at Shenandoah US 6 near Lewis 01920-01-011920 current
Iowa 49 27.228 43.819 Iowa 2 in Bedford US 34 in Adams County 01920-01-011920 02003-01-012003 Was originally a spur route from US 34 to Lenox; now County Roads N64, J23, N52, J35, and N44 (in order from US 34 to Iowa 2)
Iowa 50 7.135 11.483 US 169 near Lehigh Lehigh 01920-01-011920 02003-01-012003 Spur route; now County Road D43
Iowa 51 11.007 17.714 US 18 / US 52 at Postville Iowa 9 near Waukon 01920-01-011920 current
Iowa 52 7[10] 11 Elma US 63 east of Elma 01920-01-011920 01934-01-011934 Spur route; renumbered Iowa 272 when US 52 extended into Iowa
No. 53 13 21 No. 14 near Rockford No. 19 near Nora Springs 01920-01-011920 01926-01-011926 Renumbered Iowa 147 to avoid conflict with US 53 (which became US 55 in the revised numbering plan; see below)
Iowa 53 3.04[8] 4.89 Iowa 3 near Clarksville Clarksville 01926-01-011926 01949-01-011949 Formerly No. 55; became part of Iowa 188
Iowa 53 1.43[11] 2.30 Gowrie Iowa 175 near Gowrie 01953-01-011953 01969-01-011969 Spur route; now local roads (Market and 4th Streets)
Iowa 54 2.99 4.81 Marble Rock Iowa 14 in Floyd County 01920-01-011920 01980-01-011980 Spur route; now County Road B60
No. 55 3 4.8 No. 10 near Clarksville Clarksville 01920-01-011920 01926-01-011926 Renumbered Iowa 53 to avoid conflict with US 55
Iowa 55 4.506 7.252 Seymour Iowa 2 near Promise City 01934-01-011934 02003-01-012003 Spur route; now County Road S60
Iowa 56 24.432 39.319 Iowa 150 at West Union Iowa 13 at Elkader 01920-01-011920 current
Iowa 57 18.41[12] 29.63 Iowa 14 near Fern Iowa 58 in Cedar Falls 01920-01-011920 01986-01-011986 Section from Iowa 58 to US 20 was deleted in 1980; removed after US 20 freeway was constructed
Iowa 57 43.765 70.433 US 65 near Iowa Falls US 218 / Iowa 27 / Iowa 58 at Cedar Falls 01986-01-011986 current Formerly US 20
Iowa 58 12.030 19.360 US 63 at Hudson US 218 / Iowa 27 / Iowa 57 at Cedar Falls 01920-01-011920 current
Iowa 59 197[10] 317 Minnesota state line Iowa 5 at Albia 01920-01-011920 01934-01-011934 Replaced by US 63 and Iowa 137
Iowa 60 233.24[5] 375.36 Route 5 south of Cincinnati US 18 near Wesley 01920-01-011920 01968-12-311968 Renumbered Iowa 5 and Iowa 17
Iowa 60 58.771 94.583 US 75 at Le Mars MN 60 at Bigelow, Minn. 01969-01-011969 current Formerly Iowa 33
No. 61 73 117 No. 28 at Anamosa No. 6 in Lyons 01920-01-011920 01926-01-011926 Renumbered Iowa 117 and Iowa 136
Iowa 62 19.633 31.596 Iowa 64 at Maquoketa US 52 in Bellevue 01920-01-011920 current
No. 63 24 39 No. 59 in New Sharon No. 7 in Grinnell 01920-01-011920 01926-01-011926 Renumbered Iowa 146
Iowa 64 32 51 Iowa 163 at Prairie City US 30 in Colo 01920-01-011920 01936-01-011936 Renumbered Iowa 117
Iowa 64 64.355 103.569 US 151 at Anamosa US 52 / IL 64 at Savanna, Ill. 01939-06-201939 current Formerly Iowa 117
No. 65 21 34 No. 8 at Lucas No. 1 south of Indianola 01920-01-011920 01926-01-011926 Renumbered Iowa 137
Iowa 66 7 11 Humeston Iowa 3 near Humeston 01920-01-011920 01930-01-011930 Spur route; replaced by an extended Iowa 137
Iowa 66 7.011 11.283 Iowa 2 near Diagonal Diagonal 01930-01-011930 02003-01-012003 Spur route; now County Road P33
Iowa 67 6[10] 9.7 Seymour Iowa 3 near Promise City 01920-01-011920 01934-01-011934 Spur route; renumbered Iowa 55 when US 67 extended into Iowa
Iowa 68 1.933 3.111 Melrose US 34 near Melrose 01920-01-011920 02003-01-012003 Spur route; now County Road S70
No. 69 3 4.8 No. 3 near Mystic Mystic 01920-01-011920 01926-01-011926 Renumbered Iowa 138
Iowa 70 8.20[5] 13.20 Macksburg US 169 near Macksburg 01920-01-011920 01966-01-011966 Spur route; now County Road G41
Iowa 70 23.954 38.550 Iowa 92 at Columbus Junction US 6 in West Liberty 01969-01-011969 current Formerly Iowa 76
No. 71 3 4.8 Moulton No. 3 near Moulton 01920-01-011920 01926-01-011926 Renumbered Iowa 142
Iowa 72 10.89[12] 17.53 US 69 west of Dows I-35 east of Dows 01920-01-011920 01986-01-011986 Originally a spur route; extended east from Dows to I-35 in 1980
Iowa 73 35.9 57.8 Iowa 8 in Dysart US 6 in Marengo 01920-01-011920 01934-01-011934 Renumbered Iowa 212 to avoid conflict with new Iowa 73, which was proposed to become part of US 73
Iowa 73 225 362 Missouri state line south of Shenandoah Minnesota state line near Allendorf 01934-01-011934 01935-01-011935 Was proposed to become part of US 73; replaced by US 59
Iowa 73 14.97[13] 24.09 Iowa 141 in Coon Rapids Iowa 44 01936-01-011936 01972-01-011972 Became County Road N46
Iowa 74 38.27[4] 61.59 Iowa 38 in Tipton US 61 in Davenport 01920-01-011920 01941-01-011941 Replaced by Iowa 150, which was proposed to become part of US 150
Iowa 74 11.168 17.973 US 151 in Cedar Rapids Palo 01943-01-011943 01966-01-011966 Spur route; renumbred Iowa 94 when I-74 was designated
No. 75 2 3.2 No. 5 near Marcus Marcus 01920-01-011920 01926-01-011926 Renumbered Iowa 143
Iowa 76 25.98[5] 41.81 Columbus City US 6 in West Liberty 01920-01-011920 01968-12-311968 Renumbered Iowa 70
Iowa 76 48.911 78.715 US 18 near McGregor MN 76 near Eitzen, Minn. 01969-01-011969 current Formerly portion of Iowa 13
Iowa 77 2.685 4.321 Iowa 92 near Keota Keota 01920-01-011920 02003-01-012003 Spur route, continued south to Iowa 78 until 1980; now County Road W15 and a local road
Iowa 78 58.429 94.032 Iowa 149 near Martinsburg US 61 near Morning Sun 01920-01-011920 current
Iowa 79 1.84 2.96 Iowa 2 near Bonaparte Bonaparte 01920-01-011920 01980-01-011980 Spur route; now County Road W40
Iowa 79 5.637 9.072 Geode State Park US 34 in Middletown 01980-01-011980 02003-01-012003 Park access road; was a county road before commissioning and returned to a county road; initially known as County Road 79 until 2005 when it became J20
Iowa 80 4.00[6] 6.44 US 34 near West Burlington US 61 in Burlington 01920-01-011920 01957-01-011957 Spur route; renumbered Iowa 406 when I-80 was designated
Iowa 81 9.20[5] 14.81 Iowa 92 near West Chester Iowa 22 at Wellman 01920-01-011920 01968-12-311968 Renumbered Iowa 114
Iowa 81 2.215 3.565 Route 81 near Farmington Iowa 2 near Farmington 01969-01-011969 current Formerly Iowa 114
Iowa 82 3.773 6.072 Blairstown US 30 near Blairstown 01920-01-011920 02003-01-012003 Spur route; now County Road V66
Iowa 83 34.191 55.025 US 59 in Avoca Iowa 148 in Anita 01920-01-011920 current Continued west to Neola until 2003
Iowa 84 6.09[8] 9.80 College Springs US 71 near Shambaugh 01920-01-011920 01943-01-011943 Spur route; replaced by an extended Iowa 333
Iowa 84 2.13 3.43 Eastern Iowa Airport I-380 near Cedar Rapids 01943-01-011943 01980-01-011980 Airport access road; now County Road E70
Iowa 85 8.408 13.531 Montezuma city limits Iowa 21 near Deep River 01920-01-011920 current
Iowa 86 4 6.4 US 34 in Council Bluffs Lake Manawa 01920-01-011920 01928-01-011928 Spur route; restored in 1931 as Iowa 241, later Iowa 192
Iowa 86 3.7 6.0 US 61 (now Sunnyside Avenue) in Burlington US 61 (now Summer Street) in Burlington 01929-01-011929 01945-01-011945 Now Roosevelt Avenue and West Avenue
Iowa 86 0.47 0.76 Fertile Iowa 9 at Fertile 01945-01-011945 01980-01-011980 Spur route
Iowa 86 12.519 20.147 US 71 near Milford MN 86 near Spirit Lake 01980-01-011980 current
Iowa 87 4.06[14] 6.53 US 69 west of Elkhart Elkhart 01920-01-011920 01983-01-011983 Spur route
Iowa 88 37.65[4] 60.59 US 6 in Altoona US 30 near Marshalltown 01920-01-011920 01939-01-011939 Originally a spur route; replaced by an extended Iowa 64
Iowa 88 8.01 12.89 US 61 / Iowa 2 in Fort Madison Iowa 16 in Denmark 01940-01-011940 01980-01-011980 Originally a spur route
Iowa 89 25.87[4] 41.63 US 169 near Bouton Iowa 64 in Johnston 01920-01-011920 01941-01-011941 Originally a spur route; replaced by an extended Iowa 141
Iowa 89 7.69 12.38 Iowa 141 near Woodward Iowa 17 in Madrid 01946-01-011946 01980-11-011980 Replaced by an extended Iowa 210
No. 90 40 64 No. 17 near Bouton No. 16 at Harcourt 01920-01-011920 01926-01-011926 Replaced by relocated Iowa 16 (now US 169)
Iowa 90 16 26 Iowa 14 at Grundy Center Iowa 59 near Voorhies 01926-01-011926 01932-01-011932 Formerly No. 58; became part of Iowa 58 again
Iowa 90 16.32[15] 26.26 I-80 in Dallas County I-35 in Des Moines 01932-01-011932 01981-01-011981 Now County Road F90; section in Polk County maintained as unsigned Iowa 934 until 1989
Iowa 91 2.69[4] 4.33 US 169 near Harcourt Dayton 01920-01-011920 01940-01-011940 Spur route; replaced by an extended Iowa 175
Iowa 91 4.18 6.73 Ledyard US 169 near Ledyard 01940-01-011940 01980-05-011980 Spur route; now County Road A30
Iowa 91 4.643 7.472 Iowa 9 in Lyon County MN 91 at the Minnesota state line 01980-01-011980 02003-01-012003 Now County Road L14 (was K64 before 1980)
Iowa 92 1.33[4] 2.14 Iowa 101 near Urbana Urbana 01920-01-011920 01939-01-011939 Spur route; became Iowa 363
Iowa 92 274.231 441.332 US 275 / N-92 in Council Bluffs IL 92 at Muscatine 01939-01-011939 current Formerly Iowa 2
Iowa 93 29.534 47.530 US 63 near Tripoli Iowa 150 in Fayette 01920-01-011920 current
Iowa 94 13.12[6] 21.11 US 151 in Marion US 30 in Mount Vernon 01920-01-011920 01958-01-011958 Replaced by relocated Iowa 150
Iowa 94 11.168 17.973 US 151 Business in Cedar Rapids Palo 01966-01-011966 02003-01-012003 Spur route; now County Road W36 in Linn County and city streets in Cedar Rapids
Iowa 95 6 9.7 US 169 near Bouton Woodward 01920-01-011920 01932-01-011932 Spur route; replaced by an extended Iowa 89
Iowa 95 3.70 5.95 Carbon Iowa 148 north of Corning 01932-01-011932 01983-01-011983 Spur route; section inside Carbon eliminated 1980; rest redesignated as unsigned Iowa 951
Iowa 96 16.635 26.771 Iowa 14 near Gladbrook US 63 near Gladbrook 01920-01-011920 current
Iowa 97 1.532 2.466 Russell US 34 near Russell 01920-01-011920 02003-01-012003 Spur route; much of route now County Road S56 with the last two blocks now Shaw Street
Iowa 98 11.10[8] 17.86 US 34 near Agency Selma 01920-01-011920 01944-01-011944 Spur route; replaced by an extended Iowa 16, and Iowa 98 was reassigned to the old route of Iowa 16
Iowa 98 1.814 2.919 Leando Iowa 16 near Douds 01920-01-011920 02017-01-012017 Spur route; originally began at Iowa 8 (later US 34) east of Agency, but was shortened to Iowa 16 near Douds in 1942 (this section became Iowa 16); now County Road V64
Iowa 99 33 53 US 30 near Camanche US 61 in Davenport 01920-01-011920 01931-01-011931 Replaced by US 55 (later US 67)
Iowa 99 33.232 53.482 US 34 in Burlington US 61 in Wapello 01931-01-011931 02003-01-012003 Now County Road X99; was County Road 99 until 2005
Iowa 100 44.42[6] 71.49 US 275 / Iowa 375 in Council Bluffs US 71 in Lyman 01920-01-011920 01958-01-011958 Originally a spur route from Iowa 2/Iowa 24 (now US 6) to Griswold, this became part of Iowa 48 in 1923; east-west route designated 1921 when Iowa 24 was decommissioned through Lewis, replaced by relocated Iowa 92
Iowa 100 6.12[16] 9.85 US 6 near Lewis US 71 near Atlantic 01958-01-011958 01958-01-011958 Former section of Iowa 92; renumbered Iowa 414 due to confusion with old Iowa 100
Iowa 100 16.140 25.975 US 30 / US 218 in Cedar Rapids US 151 / Iowa 13 near Marion 01984-01-011984 current Former portion of Iowa 150
Iowa 101 15.56 25.04 US 218 in Vinton Iowa 150 north of Urbana 01920-01-011920 01984-01-011984 Replaced by a relocated Iowa 150
Iowa 102 1.82 2.93 Hawkeye US 18 near Hawkeye 01920-01-011920 01980-01-011980 Now County Road W14
Iowa 102 0.501 0.806 New Sharon city limits US 63 / Iowa 146 in New Sharon 01980-01-011980 current Unsigned highway; formerly extended to Pella (this is now County Road G5T)
Iowa 103 15.649 25.185 US 218 near Donnellson US 61 / Iowa 2 in Fort Madison 01920-01-011920 02003-01-012003 Now County Road J40
No. 104 20 32 No. 8 near Council Bluffs No. 4 in Macedonia 01920-01-011920 01926-01-011926 First highway to be decommissioned in Iowa; became a county road (now numbered G66)
Iowa 104 1.53 2.46 Woodburn US 34 near Woodburn 01927-01-011927 01980-01-011980 Spur route; now County Road R69; segment in Woodburn maintained as unsigned Iowa 942 until 2003
Iowa 105 34.23[12] 55.09 US 69 in Lake Mills US 218 in St. Ansgar 01920-01-011920 01992-01-011992 Section from US 69 to Winnebago–Worth county line last shows on 1994 map, so was signed until 1994; now County Road 105
Iowa 106 8.98 14.45 Iowa 107 in Clear Lake US 65 in Mason City 01920-01-011920 01980-01-011980 Now local roads and County Road B35
Iowa 107 27.579 44.384 Iowa 3 near Alexander CR B35 near Clear Lake 01920-01-011920 02011-01-012011 All but parts in Meservey and Thornton removed in 2003; now County Roads S25, B65 and S14
Iowa 108 1.18 1.90 Delta Iowa 92 near Delta 01923-01-011923 01980-01-011980 Spur route; now County Road V33 and Iowa 21
Iowa 109 1.268 2.041 Oxford US 6 near Oxford 01923-01-011923 02003-01-012003 Spur route; now County Road W38
Iowa 110 0.7 1.1 Larrabee Iowa 73 in Larrabee 01923-01-011923 01934-01-011934 Spur route; decommissioned when Iowa 73 (proposed US 73, now US 59) was relocated to go through Larrabee; now a county road (455th Street)
Iowa 110 14.789 23.801 US 20 at Schaller Iowa 7 at Storm Lake 01934-01-011934 current
Iowa 111 26.72[17] 43.00 Kanawha Woden 01923-01-011923 01990-01-011990 Double spur route with US 18; originally a spur route; now County Road R35
Iowa 112 3 4.8 Iowa 13 Edgewood 01923-01-011923 01930-01-011930 Spur route; replaced by an extended Iowa 10 (this section now Iowa 3)
Iowa 112 5.19 8.35 Volga Iowa 13 near Osborne 01931-01-011931 01980-01-011980 Spur route; now County Road C24
Iowa 113 34.09[4] 54.86 Iowa 10 near Edgewood US 151 in Monticello 01924-01-011924 01938-01-011938 Replaced by an extended Iowa 38
Iowa 113 1.187 1.910 Iowa 64 near Spragueville Spragueville 01938-01-011938 02003-01-012003 Spur route; now County Road Z20
Iowa 114 2.22[5] 3.57 Route 81 near Farmington Iowa 2 near Farmington 01923-01-011923 01968-12-311968 Swapped with Iowa 81
Iowa 114 9.20 14.81 Iowa 92 near West Chester Iowa 22 at Wellman 01969-01-011969 01981-01-011981 Formerly Iowa 81; now County Road W38
Iowa 115 1.34[11] 2.16 US 69 Story City 01923-01-011923 01969-01-011969 Spur route; now County Road E15
Iowa 115 1.237 1.991 US 34 near Stanton Viking Lake State Park 01980-01-011980 02003-01-012003 Park access road; now County Roads M65 and H43
Iowa 116 1.57[18] 2.53 US 20 near Manchester Manchester Fish Hatchery 01923-01-011923 01976-01-011976 Fish hatchery access road; renumbered Iowa 938 because US 20 was rerouted
Iowa 116 2.776 4.468 Iowa 3 in Waverly US 218 near Waverly 01998-01-011998 current Section of US 218 Business in Waverly; signed as US 218 Business instead of Iowa 118
Iowa 117 63 101 US 161 at Anamosa US 52 / IL 64 at Savanna, Ill. 01923-01-011923 01936-01-011936 Swapped with Iowa 64
Iowa 117 18.562 29.873 Iowa 163 at Prairie City US 65 / Iowa 330 near Mingo 01939-06-201939 current Formerly Iowa 64
Iowa 118 4.06[17] 6.53 Steamboat Rock Iowa 175 near Eldora 01923-01-011923 01989-01-011989 Spur route; now County Road S56 and a local road (Market Street)
Iowa 119 1.04 1.67 Dorchester Iowa 76 near Dorchester 01923-01-011923 01980-01-011980 Spur route; now County Road A16
Iowa 120 0.80 1.29 Stanton US 34 near Stanton 01924-01-011924 01980-01-011980 Spur route; now County Road M63
Iowa 121 0.51[19] 0.82 Dolliver Memorial State Park Iowa 50 near Lehigh 01924-01-011924 01964-01-011964 Park access road; became a county road (now numbered D64)
Iowa 122 5.47[16] 8.80 Iowa 150 in Davenport US 61 in Davenport 01924-01-011924 01960-01-011960 Now Pine Street, Cheyenne Avenue, Division Street, Locust Street, and Marquette Street
Iowa 122 3.04 4.89 Iowa 3 near Clarksville Clarksville 01964-01-011964 01965-01-011965 Former section of Iowa 188; became part of Iowa 188 again
Iowa 122 12.264 19.737 I-35 / US 18 at Clear Lake Mason City city limits 01999-01-011999 current
Iowa 123 10.51 16.91 I-35 in Des Moines Iowa 90 in Des Moines 01924-01-011924 01959-01-011959 Partially replaced by Iowa 60; rest now Fleur Drive
Iowa 123 0.45 0.72 US 34 near Rome Rome 01969-01-011969 01980-01-011980 Spur route; inside Rome stayed in the highway system until 1981
Iowa 124 2.567 4.131 Iowa 4 in Calhoun County Twin Lakes State Park 01924-01-011924 02003-01-012003 Park access road; now County Roads D26 and N57
Iowa 125 3.26 5.25 Salem US 218 east of Salem 01924-01-011924 01981-01-011981 Spur route; section inside Salem deleted in 1980; now County Road J20
Iowa 126 1.28 2.06 US 6 near Mitchellville Mitchellville 01924-01-011924 01980-01-011980 Spur route; now unsigned County Road S27
Iowa 127 15.985 25.725 I-29 near Mondamin US 30 in Logan 01924-01-011924 current
Iowa 128 6.982 11.236 Iowa 13 near Elkader US 52 near Garnavillo 01924-01-011924 current
Iowa 129 0.45[11] 0.72 US 34 near Rome Rome 01924-01-011924 01969-01-011969 Spur route; renumbered Iowa 123 when I-129 was designated
Iowa 130 12 19 Iowa 9 near Cresco Minnesota border near Harmony, Minn 01925-01-011925 01930-01-011930 Renumbered Iowa 139 so Iowa 130 could be reused as a spur of US 30
Iowa 130 11 18 Nebraska border US 30 / US 75 in Missouri Valley 01930-01-011930 01931-01-011931 Formerly Iowa 27; replaced by relocated US 30
Iowa 130 6.65[5] 10.70 Maquoketa Caves State Park US 61 near Maquoketa 01931-01-011931 01966-01-011966 Park access road; became a county road (later numbered Y31); was Iowa 428 from 1980 to 2003
Iowa 130 32.023 51.536 Iowa 38 in Tipton I-80 / US 61 at Davenport 01969-01-011969 current Former section of Iowa 150
Iowa 131 2[10] 3.2 US 20 near Holstein US 59 near Holstein 01925-01-011925 01937-01-011937 Section from US 20 to Holstein replaced by realigned US 59; rest given to county because US 59 was realigned
Iowa 131 4.520 7.274 Iowa 21 in Belle Plaine US 30 near Belle Plaine 01937-01-011937 02003-01-012003 Part of the Lincoln Highway; now County Road V40
Iowa 132 5.74[19] 9.24 I-35 / I-80 in Des Moines Iowa 90 (now US 6) in Des Moines 01925-01-011925 01963-01-011963 Now Douglas Avenue
Iowa 133 4.23[16] 6.81 US 34 / US 218 in Mount Pleasant Oakland Mills Park (then a state park) 01925-01-011925 01961-01-011961 Park access road; became a county road (now numbered H61)
Iowa 133 0.970 1.561 US 30 in Nevada Nevada 01964-01-011964 02003-01-012003 Spur route; now 6th Street
Iowa 134 7 11 US 65 near Hubbard Iowa 58 01925-01-011925 01930-01-011930 Replaced by relocated Iowa 58
Iowa 134 8 13 Nebraska state line US 34 / US 275 in Glenwood 01930-01-011930 01935-01-011935 Replaced by relocated US 34
Iowa 134 4.06 6.53 US 65 near Hampton Geneva 01935-01-011935 01980-01-011980 Spur route; now County Road C47
Iowa 134 1.75[20] 2.82 Beed's Lake State Park Iowa 3 near Hampton 01980-01-011980 01987-01-011987 Park access road; now County Road S42
Iowa 135 0.75[21] 1.21 US 30 near Le Grand Le Grand 01926-01-011926 01954-01-011954 Spur route; replaced by relocated US 30; Iowa 135 on route shown below
Iowa 135 1.96 3.15 Montour US 30 near Montour 01954-01-011954 01980-01-011980 Spur route; now County Road T47
Iowa 136 87.611 140.996 IL 136 at Clinton US 20 / US 52 at Dyersville 01926-01-011926 current
Iowa 137 21 34 US 34 at Lucas US 65 near Indianola 01926-01-011926 01934-01-011934 Formerly No. 65; replaced by realigned US 65
Iowa 137 14.526 23.377 Iowa 5 at Albia US 63 / Iowa 163 at Eddyville 01934-01-011934 current Formerly Iowa 59
Iowa 138 3.16[22] 5.09 Iowa 2 near Mystic Mystic 01926-01-011926 01973-01-011973 Formerly No. 69; now County Road T14
Iowa 139 21 34 US 161 in Iowa City Iowa 38 near Rochester 01926-01-011926 01929-01-011929 Formerly No. 74; replaced by an extended Iowa 1
Iowa 139 11.431 18.396 Iowa 9 near Cresco MN 139 near Harmony, Minn 01930-01-011930 current Formerly Iowa 130; continued south to Protivin from 1935 to 1980
Iowa 140 25.309 40.731 US 20 at Moville Iowa 3 at Remsen 01926-01-011926 current Formerly No. 30; continued south to Sloan from 1931 to 1961, and to Hornick from 1961 to 1964; section from Kingsley to Remsen deleted in 1965, but restored in 1980
Iowa 141 155.362 250.031 I-29 near Sloan I-35 / I-80 at Grimes 01926-01-011926 current
Iowa 142 10.50[5] 16.90 Route 202 at Coatsville, Mo Iowa 2 near Moulton 01926-01-011926 01968-12-311968 Former Iowa 71; renumbered Iowa 202
Iowa 142 20.901 33.637 Iowa 2 in Plano Iowa 5 near Moravia 01980-01-011980 02003-01-012003 Now County Roads S70 and J18
Iowa 143 12.049 19.391 Iowa 3 at Marcus Iowa 10 at Granville 01926-01-011926 current
Iowa 144 34.039 54.780 Iowa 141 at Perry Iowa 175 near Harcourt 01926-01-011926 current
Iowa 145 5 8.0 Iowa 5 near Cleghorn Cleghorn 01926-01-011926 01931-01-011931 Formerly No. 32; became a county road (now numbered L40)
Iowa 145 7.408 11.922 I-29 near Thurman US 275 near Sidney 01931-01-011931 02003-01-012003 Originally a spur route west to Thurman; extended west in 1980; now County Road J24
Iowa 146 42.735 68.775 US 63 / Iowa 102 in New Sharon US 30 in Le Grand 01926-01-011926 current
Iowa 147 6.706 10.792 Rockford Iowa 14 in Floyd County 01926-01-011926 02003-01-012003 Spur route, former Iowa 53; now County Road B45
Iowa 148 66.828 107.549 Route 148 near Bedford I-80 / US 6 near Anita 01926-01-011926 current
Iowa 149 65.897 106.051 US 34 in Ottumwa I-80 near Williamsburg 01926-01-011926 current Section from I-80 to US 6 removed 1985
Iowa 150 19 31 US 32 at Homestead US 30 near Cedar Rapids 01926-01-011926 01930-01-011930 Formerly No. 13; replaced by an extended Iowa 149
Iowa 150 10 16 Schleswig Iowa 141 near Denison 01930-01-011930 01930-01-011930 Replaced by an extended Iowa 21
Iowa 150 22.96 36.95 US 30 / Iowa 17 in Jefferson Iowa 64 in Panora 01931-01-011931 01941-01-011941 Replaced by relocated Iowa 17 to avoid conflict with new Iowa 150, which was proposed to become part of US 150
Iowa 150 85.093 136.944 US 218 at Vinton US 52 / Iowa 24 at Calmar 01941-01-011941 current
Iowa 151 13[10] 21 US 71 at Auburn Iowa 17 near Lake City 01926-01-011926 01938-01-011938 Formerly No. 35; renumbered Iowa 188 when US 151 extended into Iowa
Iowa 152 1.31 2.11 US 34 near Murray Murray 01926-01-011926 01980-01-011980 Formerly No. 8; now County Road R16
Iowa 152 1.402 2.256 I-35 near Osceola US 69 at Osceola 01980-01-011980 02014-01-012014 Now County Road R35
Iowa 153 7.0 11.3 Iowa 117 in Wyoming Oxford Junction 01926-01-011926 01930-01-011930 Replaced by an extended Iowa 136
Iowa 153 4.82[6] 7.76 US 218 near North Liberty US 6 near Coralville 01930-01-011930 01957-01-011957 Replaced by rerouted US 218 and local roads
Iowa 153 1.02[5] 1.64 US 218 near North Liberty North Liberty 01957-01-011957 01968-01-011968 Former portion of US 218; now Dubuque Street
Iowa 154 12.82 20.63 Iowa 150 near Fayette Iowa 3 in Maryville 01926-01-011926 01980-11-011980 Replaced by Iowa 187
Iowa 155 7.0 11.3 Commerce Iowa 28 (now 9th Street) in Des Moines 01927-01-011927 01931-01-011931 Spur route; now Walnut Woods Drive, Browns Woods Drive, and McKinley Avenue; parts of the road were destroyed
Iowa 155 3.05 4.91 Nodaway US 34 near Nodaway 01933-01-011933 01980-10-011980 Spur route; now County Road N26, 8th Avenue and 3rd Street
Iowa 156 4.748 7.641 Iowa 5 near Marysville Bussey 01928-01-011928 02003-01-012003 Spur route, section inside Bussey removed 1980; now County Road G71
Iowa 157 0.15 0.24 Monticello US 161 near Monticello 01928-01-011928 01931-01-011931 Spur route; now Cedar Street; was the shortest state highway at the time
Iowa 157 1.032 1.661 US 63 near Lime Springs Lime Springs 01931-01-011931 02003-01-012003 Spur route; now County Road A21
Iowa 158 0.65[16] 1.05 Iowa 60 near Carlisle Carlisle 01929-01-011929 01962-01-011962 Spur route; now School Street
Iowa 159 1.83 2.95 Iowa 92 near Harper Harper 01929-01-011929 01980-01-011980 Spur route; now County Road V67
Iowa 160 0.82[8] 1.32 Wild Cat Den State Park US 61 01930-01-011930 01947-01-011947 Renumbered Iowa 389 so Iowa 160 could be reused as a spur of Iowa 60 (this section now Iowa 415)
Iowa 160 2.446 3.936 Iowa 415 at Ankeny I-35 at Ankeny 01947-01-011947 current extended east from US 69 to I-35 in 1980
Iowa 161 1.15[8] 1.85 Iowa 25 in Guthrie County Springbrook State Park 01938-01-011938 01944-01-011944 Renumbered Iowa 384 so Iowa 161 could be reused as a spur of US 61
Iowa 161 0.47[23] 0.76 US 61 in Keokuk Illinois state line 01944-01-011944 01951-01-011951 Replaced by US 136
Iowa 161 1.224 1.970 Iowa 141 at Dedham Iowa 141 near Dedham 01951-01-011951 02003-01-012003 Former route of Iowa 141; now County Roads E60 and N33
Iowa 162 2.660 4.281 Pammel State Park Iowa 92 in Madison County 01930-01-011930 01982-01-011982 Park access road; renumbered Iowa 322 to avoid confusion with nearby US 169
Iowa 162 2.0 3.2 US 18 in Charles City US 218 in Charles City 02000-01-012000 02006-01-012006 Former section of US 218; became part of relocated US 18
Iowa 163 1 1.6 Ambrose A. Call State Park US 169 near Algona 01930-01-011930 01934-01-011934 Park access road; renumbered Iowa 274 when US 163 was designated
Iowa 163 166.270 267.586 US 69 in Des Moines US 34 at Burlington 01937-01-011937 current
Iowa 164 3.79[17] 6.10 US 30 in Boone Ledges State Park 01930-01-011930 01990-01-011990 Park access road; now County Road R27
Iowa 165 4.67[21] 7.52 Lewis and Clark State Park US 75 in Onawa 01930-01-011930 01955-01-011955 Park access road; replaced by an extended Iowa 175
Iowa 165 0.410 0.660 Abbott Drive at Omaha, Neb. Abbott Drive at Omaha, Neb. 01956-01-011956 current Only state highway west of the Missouri River
Iowa 166 0.57 0.92 Hastings US 34 near Hastings 01930-01-011930 01980-11-011980 Spur route; now County Road M16
Iowa 167 3.21 5.17 Doon US 75 near Doon 01930-01-011930 01980-01-011980 Spur route; now Main Street, 3rd Avenue and County Road A44
Iowa 168 2.70 4.35 Iowa 83 near Minden Shelby 01930-01-011930 01980-01-011980 Spur route; now County Road M16
Iowa 169 3 4.8 Elk Horn Iowa 7 at Kimballton 01930-01-011930 01930-01-011930 Spur route; renumbered Iowa 173 when US 169 was created in Iowa
Iowa 170 1.68[22] 2.70 Everly US 18 near Everly 01930-01-011930 01974-01-011974 Spur route, former portion of US 18; now County Road M27
Iowa 171 1 1.6 Wall Lake State Park (now Big Wall Lake Wildlife Area) US 75 in Onawa 01930-01-011930 01935-01-011935 Park access road; now an unnumbered county road
Iowa 171 1.05 1.69 Elberon Iowa 21 near Elberon 01935-01-011935 01980-01-011980 Spur route; now Main Street and County Road E44
Iowa 172 4.23 6.81 Elgin US 18 in Clermont 01930-01-011930 01980-01-011980 Spur route; now County Road W51 and Main, Clermont and Center Streets
Iowa 173 14.680 23.625 Iowa 83 near Atlantic Iowa 44 at Kimballton 01930-01-011930 current Originally a spur route south to Elk Horn; extended in 1980
Iowa 174 3.61[18] 5.81 Farragut Iowa 2 near Farragut 01930-01-011930 01976-01-011976 Spur route; now County Road M16
Iowa 175 221.367 356.256 N-51 at Decatur, Neb US 63 near Hudson 01930-01-011930 current Originally a spur route
Iowa 176 1.21[13] 1.95 Iowa 92 near Cumberland Cumberland 01930-01-011930 01972-01-011972 Spur route; now County Road N28 and Jackson, 1st, and Main Streets
Iowa 177 1 1.6 Carson US 59 near Carson 01930-01-011930 01937-01-011937 Spur route; decommissioned when Iowa 100 (now Iowa 92) extended west through Carson
Iowa 177 3.20 5.15 Iowa 9 near Osage Mitchell 01937-01-011937 01980-01-011980 Spur route; now County Road T28
Iowa 178 0.98 1.58 Iowa 9 near Little Rock Little Rock 01930-01-011930 01980-01-011980 Spur route; now Main Street and Maple Avenue
Iowa 179 0.82 1.32 US 69 near Klemme Klemme 01930-01-011930 01980-01-011980 Spur route; now 168th Street and Main Street
Iowa 180 2.46 3.96 Hayesville Iowa 149 near Hayesville 01930-01-011930 01980-01-011980 Spur route; now County Road G49
Iowa 181 3 4.8 Riverside US 161 near Riverside 01930-01-011930 01931-01-011931 Spur route; replaced by an extended Iowa 22
Iowa 181 9.596 15.443 Iowa 5 / Iowa 92 near Pleasantville Melcher-Dallas 01931-01-011931 02003-01-012003 Spur route; now County Road S45
Iowa 182 11.44[5] 18.41 Iowa 9 in Lansing MN 26 at New Albin 01930-01-011930 01968-12-311968 Swapped with Iowa 26
Iowa 182 9.051 14.566 US 18 in Inwood Iowa 9 near Larchwood 01969-01-011969 current Formerly Iowa 26
Iowa 183 29.952 48.203 Iowa 127 near Mondamin Iowa 141 in Ute 01930-01-011930 current Continued south to US 6 until 1981, and to Council Bluffs city limits until 2003
Iowa 184 26 42 Blockton US 34 near Creston 01930-01-011930 01932-01-011932 Spur route; replaced by an extended Iowa 25
Iowa 184 15.026 24.182 US 275 near Randolph US 59 near Randolph 01934-01-011934 02003-01-012003 Originally a spur route from US 275 to Randolph; now County Road J18
Iowa 185 1.51[24] 2.43 Iowa 14 near Conrad Conrad 01934-01-011934 01978-01-011978 Spur route; now County Road D67
Iowa 186 3.27 5.26 US 34 near Prescott Prescott 01930-01-011930 01980-01-011980 Spur route; now County Road N61 and 6th Avenue
Iowa 186 3.375[25] 5.432 Green Valley State Park Iowa 25 in Creston 01980-01-011980 02001-01-012001 Park access road; now unnumbered county roads (Green Valley Road and 130th Street) and Lincoln Street
Iowa 187 9 14 Iowa 10 in Alton Hospers 01930-01-011930 01931-01-011931 Spur route; replaced by Iowa 33
Iowa 187 28.385 45.681 US 20 near Masonville Iowa 150 near Fayette 01931-01-011931 current Originally was a park access road to Backbone State Park; moved to current route in 1980
Iowa 188 26[10] 42 US 52 / Iowa 10 at Luxemburg US 161 at Cascade 01930-01-011930 01938-01-011938 Replaced by an extended Iowa 136
Iowa 188 13 21 US 71 at Auburn Iowa 17 near Lake City 01938-01-011938 01940-01-011940 Formerly No. 35 and Iowa 151; replaced by an extended Iowa 175
Iowa 188 24.231 38.996 Iowa 3 near Clarksville US 63 near Tripoli 01945-01-011945 current
Iowa 189 1.00 1.61 Bridgewater Iowa 92 north or Bridgwater 01930-01-011930 01980-01-011980 Spur route; now County Road N51
Iowa 190 10 16 Ashton Iowa 9 in Sibley 01930-01-011930 01931-01-011931 Spur route; replaced by Iowa 33
Iowa 190 7.46 12.01 Fairbank Iowa 150 near Oelwein 01931-01-011931 01980-01-011980 Replaced by Iowa 281
Iowa 191 22.790 36.677 I-680 near Neola Iowa 37 at Earling 01930-01-011930 current continued south to US 6 until 1981, and to Council Bluffs city limits until 2003
Iowa 192 10 16 US 75 in Sloan Iowa 141 near Hornick 01930-01-011930 01931-01-011931 Became part of an extended Iowa 140
Iowa 192 5.090 8.192 I-29 / I-80 at Council Bluffs I-29 at Council Bluffs 01931-01-011931 02017-01-012017 Renumbered from Iowa 241; was decommissioned in 1975, but restored in 1980; truncated in 2016; now city streets
Iowa 193 10.852 17.465 US 18 in Fayette County Iowa 24 in Jackson Junction 01930-01-011930 02003-01-012003 Now County Road V68
Iowa 194 0.86[6] 1.38 Iowa 2 in Clarinda Clarinda Treatment Center 01930-01-011930 01958-01-011958 Hospital access road; now 16th Street
Iowa 195 3[10] 4.8 US 69 in Jewell Ellsworth 01930-01-011930 01935-01-011935 Spur route; became part of an extended Iowa 175
Iowa 195 2.896 4.661 Iowa 4 near Plover Plover 01935-01-011935 02003-01-012003 Spur route; now County Road C15
Iowa 196 1 1.6 US 20 near Williams Williams 01930-01-011930 01932-01-011932 Was proposed to replace part of US 20, which was to be shifted south, but the plan to relocate US 20 was abandoned in 1932; portion now County Road D25
Iowa 196 10.136 16.312 US 71 / Iowa 175 near Lake View US 20 near Sac City 01935-01-011935 02015-01-012015 Replaced by a rerouted US 71
Iowa 197 7[10] 11 Stratford Iowa 60 near Stanhope 01930-01-011930 01937-01-011937 Spur route; became part of an extended Iowa 175
Iowa 197 2.567 4.131 Iowa 3 near Albert City Albert City 01937-01-011937 02003-01-012003 Spur route; now Main Street and County Road N14
Iowa 198 2.231 3.590 Garrison US 218 near Garrison 01930-01-011930 02003-01-012003 Spur route, section in Garrison removed 1980; now County Road V66
Iowa 199 2.666 4.291 Van Horne US 218 near Van Horne 01930-01-011930 02003-01-012003 Spur route, section in Van Horne removed 1980; now County Road E44
Iowa 200 2.163 3.481 US 30 near Keystone Keystone 01930-01-011930 02003-01-012003 Spur route, section in Keystone removed 1980; now County Road V42
Iowa 201 4.755 7.652 Norway US 30 / US 218 near Atkins 01930-01-011930 02003-01-012003 Spur route; now County Road W24
Iowa 202 8.13[5] 13.08 US 218 Shellsburg 01930-01-011930 01967-01-011967 Spur route; became a county road (now numbered E36)
Iowa 202 10.461 16.835 Route 202 at Coatsville, Mo Iowa 2 near Moulton 01969-01-011969 current Formerly Iowa 142
Iowa 203 8.78 14.13 Terril Iowa 9 01930-01-011930 01980-01-011980 Spur route; original east-west spur now County Road A34, north-south spur now County Road N14, Main and State streets
Iowa 204 5.407 8.702 Iowa 2 near Garden Grove Garden Grove 01930-01-011930 02003-01-012003 Spur route; now County Roads R20 and J69
Iowa 205 2.927 4.711 US 65 near Milo Milo 01930-01-011930 02003-01-012003 Spur route; now County Road G58
Iowa 206 6.221 10.012 US 65 near Liberty Center Liberty Center 01930-01-011930 02003-01-012003 Spur route; now County Road G76
Iowa 207 3.058 4.921 I-35 near New Virginia New Virginia 01930-01-011930 02003-01-012003 Spur route; now County Road G76
Iowa 208 14 23 US 20 Backbone State Park 01930-01-011930 01931-01-011931 Park access road; renumbered Iowa 187
Iowa 208 11.83[22] 19.04 Iowa 2 Blanchard 01931-01-011931 01974-01-011974 Spur route; now County Road M48
Iowa 209 0.66[18] 1.06 Iowa 149 near Conroy Conroy 01931-01-011931 01976-01-011976 Spur route; now County Road F34
Iowa 210 34.781 55.975 Iowa 141 near Woodward US 65 near Collins 01931-01-011931 current Originally a double spur route from Slater to Maxwell; extended in 1980
Iowa 211 1.63 2.62 Cambridge Iowa 210 near Cambridge 01931-01-011931 01980-01-011980 Spur route; now County Road R70
Iowa 212 20 32 Iowa 8 in Dysart US 30 in Belle Plaine 01931-01-011931 01933-01-011933 Replaced by an extended Iowa 73, which was renumbered Iowa 212 9 months later; this portion became part of Iowa 21 a month later
Iowa 212 12.157 19.565 Iowa 21 near Belle Plaine US 6 at Marengo 01934-01-011934 current continued northwest to US 30 from 1937 to 1980
Iowa 213 3.72 5.99 Blakesburg US 34 north of Blakesburg 01931-01-011931 01980-12-011980 Spur route; now County Road T61
Iowa 214 5.736 9.231 Iowa 175 near Ivester Wellsburg 01931-01-011931 02003-01-012003 Spur route; now County Road T19
Iowa 215 8.738 14.062 Union Iowa 175 in Eldora 01931-01-011931 02003-01-012003 Spur route; now County Road S62
Iowa 216 1.70[15] 2.74 Iowa 5 Exline 01931-01-011931 01981-01-011981 Spur route; now County Road T16
Iowa 217 4.96[17] 7.98 Breda US 71 01931-01-011931 01989-01-011989 Spur route; now County Road E16
Iowa 219 1.53 2.46 Iowa 9 near Lake Park Lake Park 01931-01-011931 01980-12-011980 Spur route; now County Road M27
Iowa 220 7.233 11.640 US 6 at South Amana US 151 at Amana 01931-01-011931 current Continued east to East Amana and south to Upper South Amana until 1980
Iowa 221 11[10] 18 US 71 near Albert City Albert City 01931-01-011931 01937-01-011937 Spur route; became a county road (now numbered C29)
Iowa 221 42.61[8] 68.57 Iowa 5 near Cherokee Iowa 17 / Iowa 10 at Pocahontas 01937-01-011937 01945-01-011945 Extended in both directions and renumbered Iowa 3
Iowa 221 3.909 6.291 I-35 near Story City Roland 01947-01-011947 02003-01-012003 Spur route, section from I-35 to US 69 removed 1980; now County Road E18
Iowa 222 15.12 24.33 Iowa 15 near Ottosen Livermore 01931-01-011931 01980-01-011980 Spur route; now County Road C20
Iowa 223 12.22[9] 19.67 Iowa 330 near Baxter Iowa 14 near Baxter 01931-01-011931 01997-01-011997 Originally a spur route, extended west from Baxter in 1980; now County Road F17
Iowa 224 10.587 17.038 US 6 near Kellogg Iowa 14 near Laurel 01931-01-011931 current Originally a spur route; extended north from Kellogg in 1980
Iowa 225 7.688 12.373 Sully Iowa 146 in Searsboro 01931-01-011931 02003-01-012003 Spur route; now County Road F62
Iowa 226 10.78 17.35 US 18 Titonka 01931-01-011931 01980-12-011980 Spur route; now County Road P64
Iowa 227 5.39[26] 8.67 US 218 near Stacyville Stacyville 01931-01-011931 01991-01-011991 Spur route; now County Road T40
Iowa 228 0.85[19] 1.37 US 6 (this section became County Road F58 in 2003) near Walcott Walcott 01931-01-011931 01964-01-011964 Spur route; now Main Street
Iowa 229 5.233 8.422 Garwin US 63 in Tama County 01931-01-011931 02003-01-012003 Spur route; now County Road E29
Iowa 230 1[10] 1.6 Sergeant Bluff US 75 near Sergeant Bluff 01931-01-011931 01934-01-011934 Spur route; decommissioned because US 75 was rerouted through Sergeant Bluff, and Iowa 230 was reassigned to the old route of US 75; part later restored as Iowa 378 in 1942
Iowa 230 8.60[19] 13.84 US 75 near Sergeant Bluff US 75 in Sioux City 01934-01-011934 01965-01-011965 Spur route; now Transit Avenue, Morningside Avenue, Lakeport Road and a county road (now numbered K29)
Iowa 231 1.83[15] 2.95 Iowa 10 near Ireton Ireton 01931-01-011931 01981-01-011981 Spur route; now County Road K30 and 4th Street
Iowa 231 4.068 6.547 US 34 west of New London US 34 east of New London 02000-01-012000 02003-01-012003 Former section of US 34, unsigned; now Main Street
Iowa 232 1.99 3.20 Earlham I-80 near Earlham 01931-01-011931 01980-01-011980 Spur route; now County Road P57
Iowa 233 5.30[17] 8.53 Albion Iowa 14 near Rhodes 01931-01-011931 01989-01-011989 Spur route; became part of relocated Iowa 330
Iowa 234 6.72[17] 10.81 US 30 in State Center Iowa 330 near Rhodes 01931-01-011931 01994-01-011994 Originally a spur route; only the section north of CR E63 remained after 1989; now an unnumbered county road
Iowa 235 3 4.8 Iowa 234 near Rhodes Rhodes 01931-01-011931 01935-01-011935 Spur route; became an unnumbered county road (now 285th Street)
Iowa 235 1.24[5] 2.00 Rhodes Iowa 234 near Rhodes 01935-01-011935 01966-01-011966 Spur route; renumbered Iowa 245 when I-235 was designated
Iowa 236 1.18[20] 1.90 Templeton US 71 / Iowa 141 near Templeton 01931-01-011931 01987-01-011987 Spur route; now local roads (Main and 2nd Streets) and County Road N18
Iowa 237 1.41 2.27 Iowa 9 near Ocheyedan Ocheyedan 01931-01-011931 01981-01-011981 Spur route; section in Ocheyedan removed in 1980; now County Road L58
Iowa 238 1.063 1.711 Iowa 9 near Harris Harris 01931-01-011931 02003-01-012003 Spur route; was decommissioned in 1981, but was restored in 1987; now County Road M20
Iowa 239 0.510 0.821 Waubonsie State Park Iowa 2 in Fremont County 01931-01-011931 02003-01-012003 Park access road; now County Road L48
Iowa 240 6.389 10.282 Royal US 71 in Clay County 01931-01-011931 02003-01-012003 Spur route; now Main Street, County Roads M36 and B40
Iowa 241 5 8.0 US 34 / US 275 at Council Bluffs US 34 / US 275 01931-01-011931 01931-01-011931 Renumbered Iowa 192
Iowa 241 0.99 1.59 Readlyn Iowa 3 near Readlyn 01931-01-011931 01980-01-011980 Spur route; now local roads
Iowa 242 5.855 9.423 US 34 in Mills County Silver City 01931-01-011931 02003-01-012003 Spur route; now County Road L55
Iowa 243 7.97 12.83 Iowa 140 near Kingsley Pierson 01931-01-011931 01980-01-011980 Spur route; now County Road D12
Iowa 243 0.559 0.900 Black Hawk Lake State Park US 71 / Iowa 175 near Wall Lake 01980-01-011980 02003-01-012003 Park access road; now an unnumbered county road
Iowa 244 1.96 3.15 Henderson US 59 01931-01-011931 01980-01-011980 Spur route; now County Roads H12 and M21 and Maple Street
Iowa 244 0.771 1.241 I-80 near Neola Iowa 191 in Neola 01980-01-011980 02003-01-012003 Now County Road L55
Iowa 245 1.54[16] 2.48 Iowa 9 near Estherville Fort Defiance State Park 01931-01-011931 01961-01-011961 Park access road; became a county road (now numbered N26)
Iowa 245 1.24[17] 2.00 Rhodes Iowa 234 near Rhodes 01966-01-011966 01990-01-011990 Spur route; portion outside of Rhodes removed in 1989; now County Road E63
Iowa 246 3.26 5.25 US 61 in Zwingle La Motte 01931-01-011931 01981-01-011981 Spur route; section outside La Motte deleted in 1980; now County Road D55 and city streets
Iowa 247 0.68[19] 1.09 Chelsea Iowa 212 near Chelsea 01931-01-011931 01963-01-011963 Spur route; became a county road (now numbered V18)
Iowa 248 0.54 0.87 Independence State Hospital US 20 in Independence 01931-01-011931 01980-01-011980 Hospital access road; now 20th Avenue SW
Iowa 249 0.665 1.070 Iowa 78 near Winfield Winfield 01931-01-011931 02003-01-012003 Spur route; now County Road V66
Iowa 250 0.59 0.95 Lakota US 169 / Iowa 9 near Lakota 01932-01-011932 01980-01-011980 Spur route; now a local road
Iowa 251 1.71 2.75 St. Charles I-35 near St. Charles 01932-01-011932 01980-01-011980 Spur route; now County Road G50
Iowa 252 0.584 0.940 US 61 / Iowa 92 near Grandview Grandview 01932-01-011932 02003-01-012003 Spur route
Iowa 253 0.932 1.500 Iowa 14 near Williamson Williamson 01932-01-011932 02003-01-012003 Spur route
Iowa 254 0.45[5] 0.72 Iowa 92 at Massena Massena 01932-01-011932 01968-12-311968 Spur route; renumbered Iowa 322
Iowa 254 7.91 12.73 Iowa 9 near Buffalo Center MN 254 near Rake 01969-01-011969 01980-01-011980 Spur route; formerly Iowa 322
Iowa 254 2.7 4.3 dead end northwest of Nashua dead end southeast of Nashua 02003-01-012003 02004-01-012004 Former section of US 218
Iowa 255 2.26 3.64 Orchard US 218 near Orchard 01932-01-011932 01980-01-011980 Spur route
Iowa 256 0.80 1.29 Iowa 17 near Corwith Corwith 01932-01-011932 01980-01-011980 Spur route
Iowa 257 0.58[16] 0.93 US 18 near Dickens Dickens 01933-01-011933 01960-01-011960 Spur route
Iowa 258 1.989 3.201 I-35 near Van Wert US 69 near Van Wert 01933-01-011933 02003-01-012003 Originally a spur route
Iowa 259 1.001 1.611 US 169 near Tingley Tingley 01933-01-011933 02003-01-012003 Spur route; section in Tingley removed 1980
Iowa 260 2.12[24] 3.41 Shannon City US 169 near Shannon City 01933-01-011933 01977-01-011977 Spur route
Iowa 261 33.02[16] 53.14 Iowa 1 in Iowa City US 151 01930-01-011930 01962-01-011962 Numbered as a branch of US 161; replaced by relocated Iowa 1
Iowa 262 1.99 3.20 US 69 near Galt Galt 01933-01-011933 01980-01-011980 Spur route
Iowa 263 2.14 3.44 Coulter Latimer 01933-01-011933 01980-01-011980 Double spur route with Iowa 3
Iowa 263 12.511 20.135 Iowa 14 in Grundy County US 20 near Cedar Falls 02000-01-012000 02003-01-012003 Former section of US 20
Iowa 264 2.39 3.85 Linn Grove Iowa 10 near Linn Grove 01933-01-011933 01980-01-011980 Spur route
Iowa 265 2.08[16] 3.35 Kent US 34 near Kent 01934-01-011934 01961-01-011961 Spur route
Iowa 266 1.709 2.750 US 69 near Weldon Weldon 01934-01-011934 02003-01-012003 Spur route; section in Weldon removed 1980
Iowa 267 1.19 1.92 Iowa 93 near Randalia Randalia 01934-01-011934 01980-01-011980 Spur route
Iowa 268 6.29[13] 10.12 US 59 near Irwin Irwin 01934-01-011934 01971-01-011971 Spur route; became part of an extended Iowa 37
Iowa 269 3.01 4.84 Iowa 16 near Stockport Stockport 01934-01-011934 01980-01-011980 Spur route
Iowa 270 1.80 2.90 Iowa 16 near Hillsboro Hillsboro 01934-01-011934 01980-01-011980 Spur route
Iowa 271 7[10] 11 Marne US 71 in Atlantic 01934-01-011934 01935-01-011935 Spur route; replaced by an extended Iowa 83
Iowa 271 0.84 1.35 Iowa 4 near Yale Yale 01935-01-011935 01980-01-011980 Spur route