Codington County, South Dakota

Codington County
Location within the U.S. state of South Dakota
South Dakota's location within the U.S.
Coordinates: 44°59′N 97°11′W / 44.98°N 97.18°W / 44.98; -97.18
Country United States
State South Dakota
Founded1877 (created)
1878 (organized)
Named afterReverend George S. S. Codington
SeatWatertown
Largest cityWatertown
Area
  Total
717 sq mi (1,860 km2)
  Land688 sq mi (1,780 km2)
  Water29 sq mi (80 km2)  4.0%
Population
 (2020)
  Total
28,325
  Estimate 
(2024)
29,278
  Density40/sq mi (15/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional districtAt-large
Websitewww.codington.org

Codington County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 28,325, making it the 7th most populous county in South Dakota. Its county seat is Watertown. The county was created in 1877 and organized in 1878. It is named for Rev. George S. S. Codington, Dakota Territory legislator.

Codington County comprises the Watertown, SD Micropolitan Statistical Area.