South Dakota Counties
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South Dakota Counties

There are sixty-six counties in the state of South Dakota. Todd County and Oglala Lakota County are the only counties in South Dakota which do not have their own county seats

Clark County, South Dakota

Clark County Education, Geography, and History

Clark County, South Dakota Courthouse

Clark County is a county located in the state of South Dakota. Based on the 2010 census, the population was 3,691. Its county seat is Clark. The county was created in 1873 and organized in 1881. It was named for Newton Clark, a South Dakota legislator in 1873

Etymology - Origin of Clark County Name

Clark is named after Clark House, a local inn that was the county's first headquarters.


County QuickFacts: CensusBureau Quick Facts

Clark County History

Clark County is located in the northeastern part of the state, and was created from Hanson County in 1873.

The first settlement in Clark County was in June 1879. In May of 1881, the governor appointed county Commissioners who then met and organized the county. They passed a resolution declaring that the Clark House, owned and kept by Mrs. M. E. Greenslet, be designated as the official headquarters. This house was 1/2 mile north of where the present county seat of Clark County now stands. The Chicago and Northwestern railway reached the townsite of Clark in June 1882. Clark, the county seat, is the largest town and is located in almost the exact center of the county. It was settled in the fall of 1882.

Geography: Land and Water

As reported by the Census Bureau, the county has a total area of 968 square miles (2,507 km2), of which, 958 square miles (2,481 km2) of it is land and 10 square miles (26 km2) of it (1.02%) is water.

Neighboring Counties

Bordering counties are as follows:

  • Day County, South Dakota - north
  • Codington County, South Dakota - east
  • Hamlin County, South Dakota - southeast
  • Kingsbury County, South Dakota - south
  • Beadle County, South Dakota - southwest
  • Spink County, South Dakota - west


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