THE SHERIDAN COUNTY LAND BRIEF
Land in the
Glaciated Dark Brown Prairie setting.
Sheridan County has 1,676.9 square miles of land in Montana. 4 mapped landscape regions meet across Sheridan County: Glaciated Dark Brown Prairie, Coteau Lakes Upland, Collapsed Glacial Outwash, among others.
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
Sheridan County intersects 4 mapped regional units. The largest mapped shares are:
- Glaciated Dark Brown Prairie67.6%
- Coteau Lakes Upland22.7%
- Collapsed Glacial Outwash6.9%
- Northern Missouri Coteau2.8%
Finding your parcel within Sheridan County
The atlas lists 8 cities, towns, townships, and Census communities associated with Sheridan County, including Plentywood, Reserve, Outlook. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Sheridan County by land and water
The Census records 29 square miles of water within Sheridan County, or 1.7% of its total area. That share is close to Sheridan County’s 1.7%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Sheridan County has 8,301.7 times the land area of nearby Antelope CDP (0.2 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Daniels County, Roosevelt County within Montana. A tract near one of these lines should be matched to the county identifier on its own records.

