Sioux County, Iowa

Sioux County
Sioux County Courthouse
Location within the U.S. state of Iowa
Iowa's location within the U.S.
Coordinates: 43°04′53″N 96°10′46″W / 43.0814°N 96.1794°W / 43.0814; -96.1794
Country United States
State Iowa
Founded1851
Named afterSioux people
SeatOrange City
Largest citySioux Center
Area
  Total
769 sq mi (1,990 km2)
  Land768 sq mi (1,990 km2)
  Water0.7 sq mi (2 km2)  0.09%
Population
 (2020)
  Total
35,872
  Density47/sq mi (18/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district4th
Websitesiouxcountyia.gov

Sioux County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 35,872. Its county seat is Orange City. Its largest city is Sioux Center.