List of U.S. Highways in Iowa

United States Numbered Highways of the Iowa Primary Highway System
Highway markers from different years for former US 32 (1926), US 75 (1961) and current US 151 (1971)
U.S. Highways in Iowa highlighted in red
System information
Length	3,627 mi (5,837 km)
Formed	November 11, 1926[1]
Highway names
US Highways	US Highway nn (US nn)
System links
Iowa Primary Highway System Interstate US State Secondary Scenic

Mainline routes

Number	Length (mi)[2]	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
US 6	322.454	518.939	I-480 / US-6 at Omaha, Neb.	I-74 / US 6 at Moline, Ill.	01931-06-081931	current
US 18	311.750	501.713	US 18 near Canton, S.D.	US 18 / WIS 60 at McGregor	01926-07-011926	current
US 20	300.270	483.238	I-129 / US-20 / US-75 at South Sioux City, Neb.	US 20 at East Dubuque, Ill.	01926-07-011926	current
US 30	330.856	532.461	US-30 at Blair, Neb.	US 30 at Fulton, Ill.	01926-07-011926	current
US 32	322	518	US 30 / US 75 in Council Bluffs	US 32 at Davenport	01926-07-011926	01931-06-081931	Replaced by US 6
US 34	269.111	433.092	US-34 near Plattsmouth, Neb.	US 34 at Gulfport, Ill.	01926-07-011926	current
US 52	173.722	279.578	US 52 / IL 64 at Savanna, Ill.	US 52 near Burr Oak	01935-01-011935	current
US 55	225	362	US 61 in Davenport	US 55 near Burr Oak	01926-07-011926	01935-01-011935	Replaced by US 52 and US 67
US 59	215.191	346.316	US 59 near Shenandoah	US 59 near Worthington, MN	01934-01-011934	current
US 61	192.663	310.061	US 61 / US 136 at Keokuk	US 61 / US 151 at Dubuque	01926-07-011926	current
US 63	237.758	382.634	US 63 near Lancaster, Mo.	US 63 near Chester	01926-07-011926	current
US 65	221.618	356.660	US 65 at Lineville	US 65 near Gordonsville, Minn.	01926-07-011926	current
US 67	55.275	88.956	US 67 at Davenport	US 52 / Iowa 64 near Sabula	01934-01-011934	current
US 69	227.257	365.735	US 69 near Lamoni	US 69 at Emmons, Minn.	01926-07-011926	current
US 71	231.329	372.288	US 71 at Braddyville	US 71 near Spirit Lake	01926-07-011926	current
US 75	80.010	128.764	I-129 / US-20 / US-75 at South Sioux City, Neb.	US 75 near Rock Rapids	01926-07-011926	current
US 77	0.314	0.505	US 77 / US 20 Bus. at South Sioux City, Neb.	I-29 / US 20 Bus. in Sioux City	01929-01-011929	current
US 136	3.591	5.779	US 61 / US 136 at Keokuk	US 136 at Keokuk	01951-01-011951	current
US 151	108.151	174.052	I-80 near the Amana Colonies	US 61 / US 151 at Dubuque	01938-01-011938	current
US 161	185	298	US 61 in Keokuk	US 61 in Key West	01926-07-011926	01938-01-011938	Replaced by US 218 and US 151
US 163	60	97	US 65 / US 69 in Des Moines	US 63 in Oskaloosa	01934-01-011934	01937-01-011937	Replaced by Iowa 163
US 169	234.956	378.125	US 169 near Redding	US 169 near Lakota	01930-01-011930	current
US 218	274.592	441.913	US 61 / US 136 in Keokuk	US 218 near St. Ansgar	01926-07-011926	current
US 275	59.158	95.206	US 275 near Hamburg	US-275 / N-92 at Council Bluffs	01932-01-011932	current

Special routes

Number	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
City US 6	10.2[3]	16.4	US 6 in Des Moines	US 6 / US 65 in Des Moines	01934-01-011934	01968-01-011968	Former routing of US 6
US 18 Bus.	10.752	17.304	I-35 / US 18 / Iowa 122 in Clear Lake	US 18 / US 65 in Mason City	01998-01-011998	current	Serves the Mason City area
US 18 Bus.	4.149	6.677	US 18 / Iowa 76 near McGregor	US 18 / Iowa 76 in Marquette	01989-01-011989	current	Serves McGregor and Marquette; former routing of US 18
US 20 Bus.	—	—	US 77 / US 20 Bus. at South Sioux City, Neb.	US 20 / US 75 at Sioux City	01979-01-011979	current	Serves Sioux City area; former routing of US 20
US 20 Bus.	—	—	US 20 west of Fort Dodge	US 20 east of Fort Dodge	01996-01-011996	current	Serves Fort Dodge; former routing of US 20
US 30 Alt.	—	—	US 30 Alt. at Omaha, Neb.	US 30 in Missouri Valley	01939-01-011939	01969-01-011969	Former routing of US 30
US 30 Alt.	—	—	US 30 / US 169 in Ogden	US 30 near Marshalltown	01973-01-011973	01981-01-011981	Former routing of US 30; became Iowa 930
US 30 Alt.	—	—	US 30 / US 67 in Clinton	US 30 Alt. at Fulton, Ill.	01956-01-011956	01967-01-011967	Former routing of US 30
US 30 Bus.	—	—	US 30 southwest of Marshalltown	US 30 in southeastern Marshalltown	01996-01-011996	current	Serves Marshalltown; former routing of US 30
US 30 Bus.	—	—	US 30 west of Toledo	US 30 east of Tama	02011-01-012011	current	Serves Tama and Toledo; former routing of US 30
US 34 Bus.	—	—	I-29 / US 34 near Pacific Junction	US 34 / US 275 in Glenwood	01974-01-011974	02003-01-012003	Former routing of US 34
US 34 Bus.	—	—	US 34 west of Chariton	US 34 east of Chariton	01996-01-011996	current	Serves Chariton; former routing of US 34
US 34 Bus.	—	—	US 34 in southwestern Ottumwa	US 34 / US 63 in eastern Ottumwa	01968-01-011968	current	Serves Ottumwa
US 34 Bus.	—	—	US 34 / Iowa 163 west of Fairfield	US 34 / Iowa 163 east of Fairfield	02008-01-012008	current	Serves Fairfield; former routing of US 34
US 34 Bus.	—	—	US 34 / Iowa 163 near Westwood	US 34 / US 218 / Iowa 27 / Iowa 163 at Mount Pleasant	02005-01-012005	current	Serves Mount Pleasant area; former routing of US 34
US 52 Alt.	—	—	US 52 / US 61 / US 151 in Dubuque	US 52 / Iowa 3 in Luxemburg	01964-01-011964	01967-01-011967	Original routing of US 52; mainline US 52 traffic diverted to allow for repairs on the alternate route
US 61 Bus.	5.931	9.545	US 61 / US 136 in southwestern Keokuk	US 61 / US 218 in northwestern Keokuk	01959-01-011959	current	Serves Keokuk; former routing of US 61
US 61 Bus.	9.075	14.605	US 61 / Iowa 2 west of Fort Madison	US 61 northeast of Fort Madison	02011-01-012011	current	Serves Fort Madison; former routing of US 61
US 61 Bus.	5.407	8.702	US 61 / Iowa 92 in southwestern Muscatine	US 61 / Iowa 22 / Iowa 38 / Iowa 92 in northeastern Muscatine	01984-01-011984	current	Serves Muscatine; former routing of US 61
US 61 Bus.	10.924	17.580	I-280 / US 61 west of Davenport	I-80 / US 61 in northern Davenport	02010-01-012010	current	Serves Davenport; former routing of US 61
US 61 Bus.	2.55	4.10	US 61 in southern Maquoketa	US 61 / Iowa 64 in western Maquoketa	01998-01-011998	current	Serves Maquoketa; unsigned
US 63 Bus.	6.426	10.342	US 34 / US 63 in southeastern Ottumwa	US 34 / Iowa 149 / Iowa 163 north of Ottumwa	02007-01-012007	current	Serves Ottumwa; former routing of US 63
US 63 Bus.	—	—	US 18 / US 63 south of New Hampton	US 63 north of New Hampton	02002-01-012002	current	Serves New Hampton; former routing of US 63
US 71 Bus.	—	—	US 71 / Iowa 2 south of Clarinda	US 71 east of Clarinda	01973-01-011973	current	Serves Clarinda; former routing of US 71
US 71 Bus.	—	—	US 71 / Iowa 7 at Storm Lake	US 71 near Truesdale	01996-01-011996	current	Serves Storm Lake; former routing of US 71
US 75 Bus.	10.334	16.631	I-29 / US 20 / US 75 south of Sioux City	US 75 north of Sioux City	02001-01-012001	current	Serves Sioux City; former routing of US 75
US 75 Bus.	3.082	4.960	US 75 west of Le Mars	US 75 / Iowa 60 north of Le Mars	02001-01-012001	current	Serves Le Mars; partial former routing of US 75
US 151 Bus.	12.7	20.4	US 30 / US 151 / US 218 near Fairfax	US 151 / Iowa 13 in Marion	01989-01-011989	current	Serves Cedar Rapids and Marion; former routing of US 151
US 151 Bus.	—	—	US 151 south of Monticello	US 151 north of Monticello	02004-01-012004	current	Serves Monticello; former routing of US 151
US 151 Bus.	—	—	US 151 west of Cascade	US 151 north of Cascade	02004-01-012004	current	Serves Cascade; former routing of US 151
US 169 Bus.	3.147	5.065	US 169 / US 20 Business in Fort Dodge	US 169 in Fort Dodge	01990-01-011990	current	Serves Fort Dodge; former routing of US 169
US 218 Bus.	12.7	20.4	US 34 / US 218 / Iowa 27 / Iowa 163 east of Mount Pleasant	US 218 / Iowa 27 north of Mount Pleasant	02003-01-012003	current	Serves Mount Pleasant; partial former routing of US 218
US 218 Bus.	—	—	US 218 south of Waverly	US 218 north of Waverly	01998-12-011998	current	Serves Waverly; former routing of US 218
US 218 Bus.	—	—	US 18 / US 218 south of Charles City	US 18 / US 218 north of Charles City	02000-01-012000	current	Serves Charles City; former routing of US 218