THE CLARK COUNTY LAND BRIEF
Land in the
Prairie Coteau setting.
Clark County has 957.5 square miles of land in South Dakota. 3 mapped landscape regions meet across Clark County: Prairie Coteau, Drift Plains, James River Lowland.
Flat to gently rolling glacial terrain supports a prairie transition between taller and shorter grasses. Many temporary and seasonal wetlands occupy depressions left in the glacial landscape.
Regional context: Northern Glaciated Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Clark County intersects 3 mapped regional units. The largest mapped shares are:
- Prairie Coteau66.8%
- Drift Plains26.5%
- James River Lowland6.6%
Finding your parcel within Clark County
The atlas lists 40 cities, towns, townships, and Census communities associated with Clark County, including Elrod, Garfield, Foxton. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Clark County by land and water
The Census records 9.99 square miles of water within Clark County, or 1% of its total area. That share is close to Clark County’s 1%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Clark County has 707.7 times the land area of nearby Clark city (1.35 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Beadle County, Codington County, Day County, Hamlin County, Kingsbury County, Spink County within South Dakota. A tract near one of these lines should be matched to the county identifier on its own records.

