THE EDMUNDS COUNTY LAND BRIEF
Land in the
Missouri Coteau setting.
Edmunds County has 1,126 square miles of land in South Dakota. 3 mapped landscape regions meet across Edmunds County: Missouri Coteau, Drift Plains, Southern Missouri Coteau Slope.
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
Edmunds County intersects 3 mapped regional units. The largest mapped shares are:
- Missouri Coteau69%
- Drift Plains28.8%
- Southern Missouri Coteau Slope2.2%
Northern Glaciated Plains in Edmunds County
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.
Read the regional source ↗Finding your parcel within Edmunds County
The atlas lists 40 cities, towns, townships, and Census communities associated with Edmunds County, including Rosette, Harmony, Union. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Edmunds County by land and water
The Census records 25.1 square miles of water within Edmunds County, or 2.2% of its total area. That share is close to Edmunds County’s 2.2%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Edmunds County has 32.3 times the land area of nearby Montpelier township (34.8 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Brown County, Faulk County, McPherson County, Potter County, Walworth County within South Dakota. A tract near one of these lines should be matched to the county identifier on its own records.

