Iowa County, Iowa

Iowa County
The Iowa County Courthouse in Marengo
Location within the U.S. state of Iowa
Iowa's location within the U.S.
Coordinates: 41°41′10″N 92°04′01″W / 41.686111111111°N 92.066944444444°W / 41.686111111111; -92.066944444444
Country United States
State Iowa
Founded1843
Named afterIowa River
SeatMarengo
Largest cityWilliamsburg
Area
  Total
587 sq mi (1,520 km2)
  Land586 sq mi (1,520 km2)
  Water1.0 sq mi (3 km2)  0.2%
Population
 (2020)
  Total
16,662
  Estimate 
(2023)
16,381
  Density28/sq mi (11/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district1st
Websiteiowacounty.iowa.gov

Iowa County is a county in the U.S. state of Iowa. As of the 2020 census, the population was 16,662. The county seat is Marengo. Iowa County is one of seven counties in the United States to share the same name as the state in which they are located. The other six counties are Arkansas County, Hawaii County, Idaho County, New York County, Oklahoma County, and Utah County.