THE BON HOMME COUNTY LAND BRIEF
Land in the
James River Lowland setting.
Bon Homme County has 563.5 square miles of land in South Dakota. 4 mapped landscape regions meet across Bon Homme County: James River Lowland, Southern Missouri Coteau Slope, Southern River Breaks, among others.
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
Bon Homme County intersects 4 mapped regional units. The largest mapped shares are:
- James River Lowland51.6%
- Southern Missouri Coteau Slope30.9%
- Southern River Breaks11.1%
- Southern Missouri Coteau6.4%
Northwestern Glaciated Plains in Bon Homme County
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.
Read the regional source ↗Finding your parcel within Bon Homme County
The atlas lists 7 cities, towns, townships, and Census communities associated with Bon Homme County, including Running Water, Tyndall, Springfield. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Bon Homme County by land and water
The Census records 18.1 square miles of water within Bon Homme County, or 3.1% of its total area. That share is close to Bon Homme County’s 3.1%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Bon Homme County has 357.1 times the land area of nearby Tyndall city (1.58 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Charles Mix County, Hutchinson County, Yankton County within South Dakota. A tract near one of these lines should be matched to the county identifier on its own records.

