Iowa Highway 10

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Iowa Highway 10

Iowa 10 highlighted in red
Route information
Maintained by Iowa DOT
Length104.512 mi[1] (168.196 km)
Major junctions
West end SD 46 near Hawarden
Major intersections
East end Iowa 4 in Havelock
CountryUnited States
Highway system
Iowa 9 Iowa 11

Iowa Highway 10 (Iowa 10) is a state highway that runs 104+12 miles (168.2 km) across the state of Iowa. It begins where South Dakota Highway 46 crosses the Big Sioux River into Iowa north of Hawarden. It ends east of Havelock at an intersection with Iowa Highway 4.


Iowa Highway 10 begins by going south towards Hawarden. At Hawarden, it intersects Iowa Highway 12, then turns east. Before entering Orange City, Iowa 10 intersects U.S. Highway 75. After Orange City, it enters Alton, meeting Iowa Highway 60. It continues east through Granville and meets Iowa Highway 143 before entering Paullina. After Paullina, Iowa 10 then runs concurrent for 5 miles (8.0 km) with U.S. Highway 59. They separate and Iowa 10 then enters Sutherland. Iowa 10 turns slightly southeast to go through Peterson, then continues east until intersecting U.S. Highway 71. Iowa 10 then goes south with U.S. 71, passing through Sioux Rapids before turning east again. Iowa 10 then passes through Marathon, Laurens and Havelock before ending at Iowa Highway 4 shortly after Havelock.


Iowa Highway 10 was designated as a state highway in 1920. It crossed Iowa from west to east, going from Hawarden to McGregor. It was shortened to Strawberry Point in 1926, then extended to Luxemburg in 1930 and Dubuque in 1939. In 1945, the highway was shortened to Pocahontas and in 1969, was shortened to its current eastern terminus.

Major intersections

Big Sioux River0.0000.000
SD 46 west – Beresford
Continuation into South Dakota
South Dakota–Iowa state line
Iowa 12 south (Avenue E) – Akron, Alcester, S.D.
township line
12.66820.387 CR K30 – IretonFormer Iowa 231
ShermanWest Branch
township line
19.62431.582 US 75 – Sioux Center, Le Mars
Alton28.32045.5773rd AvenueFormer Iowa 60
Iowa 450 to Iowa 60 – Sioux City, Worthington, Minn.
O'BrienCaledonia Township39.51863.598
Iowa 143 south – Marcus
township line
US 59 north – Primghar
Western end of US 59 overlap
Liberty Township53.37285.894
US 59 south – Cherokee
Eastern end of US 59 overlap
ClayPeterson Township70.426113.340 CR M36 – Linn GroveFormer Iowa 264
Douglas Township74.928120.585
US 71 north – Spencer
Western end of US 71 overlap
Buena VistaBarnesLee
township line

US 71 south / CR C16 west – Storm Lake
Eastern end of US 71 overlap
Poland Township88.667142.696S. Agora Street – MarathonFormer Iowa 390
PocahontasCummins Township104.513168.197 Iowa 4 – Pocahontas, Mallard
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Related route

Iowa Highway 450

Length0.268 mi[1] (431 m)

In Alton, Iowa 450 is a 0.27-mile-long (430 m) route which provides a direct connection between Iowa 10 and Iowa 60. It was designated when Iowa 60 moved onto a four-lane bypass of Alton. Prior to the construction of the bypass, the two routes which Iowa 450 connect intersected in Alton.


  1. ^ a b 2009 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. January 1, 2009. Retrieved December 5, 2010.
  2. ^ "Road Network (Portal)" (ESRI shapefile). Ames: Iowa Department of Transportation. April 9, 2021. Retrieved August 19, 2021.