Clark County, South Dakota

Clark County, South Dakota
Clark County Courthouse
Location within the U.S. state of South Dakota
Coordinates: 44°52′N 97°44′W / 44.86°N 97.73°W / 44.86; -97.73
Country United States
State South Dakota
Founded1873 (created)
1881 (organized)
Named afterNewton Clark
SeatClark
Largest cityClark
Area
 • Total
967 sq mi (2,500 km2)
 • Land958 sq mi (2,480 km2)
 • Water9.9 sq mi (26 km2)  1.0%
Population
 (2020)
 • Total
3,837
 • Estimate 
(2024)
3,974
 • Density4.01/sq mi (1.55/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional districtAt-large
Websitehttp://clark.sdcounties.org/

Clark County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 3,837. Its county seat is Clark. The county was created in 1873 and organized in 1881. It was named for Newton Clark, a Dakota Territory legislator in 1873.