THE CHARLES MIX COUNTY LAND BRIEF
Land in the
Southern Missouri Coteau Slope setting.
Charles Mix County has 1,097.1 square miles of land in South Dakota. 3 mapped landscape regions meet across Charles Mix County: Southern Missouri Coteau Slope, Southern River Breaks, Southern Missouri Coteau.
Glaciated plains bridge the wetter eastern prairie and the drier, more broken Great Plains. Numerous prairie potholes and other seasonal or persistent wetlands are characteristic regional landforms.
Regional context: Northwestern Glaciated Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Charles Mix County intersects 3 mapped regional units. The largest mapped shares are:
- Southern Missouri Coteau Slope55.5%
- Southern River Breaks23%
- Southern Missouri Coteau21.5%
Finding your parcel within Charles Mix County
The atlas lists 34 cities, towns, townships, and Census communities associated with Charles Mix County, including White Swan, Goose Lake, Choteau Creek. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Charles Mix County by land and water
The Census records 53.1 square miles of water within Charles Mix County, or 4.6% of its total area. That share is close to Charles Mix County’s 4.6%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Charles Mix County has 17.1 times the land area of nearby Goose Lake township (64.1 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Aurora County, Bon Homme County, Brule County, Douglas County, Gregory County, Hutchinson County, Lyman County within South Dakota. A tract near one of these lines should be matched to the county identifier on its own records.

