THE SHERIDAN COUNTY LAND BRIEF
Land in the
Mesic Dissected Plains setting.
Sheridan County has 2,523.4 square miles of land in Wyoming. 9 mapped landscape regions meet across Sheridan County: Mesic Dissected Plains, Powder River Basin, Dry Mid-elevation Sedimentary Mountains, among others.
Rolling semiarid plains are punctuated by buttes, badlands and river breaks. Much of the regional terrain developed on sandstone, siltstone and shale without the leveling influence of continental glaciers.
Regional context: Northwestern Great Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Sheridan County intersects 9 mapped regional units. The largest mapped shares are:
- Mesic Dissected Plains48.5%
- Powder River Basin15.6%
- Dry Mid-elevation Sedimentary Mountains9.9%
- Granitic Subalpine Zone8.1%
- Sedimentary Subalpine Zone8%
Middle Rockies in Sheridan County
Forested mountain ranges rise above grassy or shrubby intermountain valleys. The Middle Rockies combine alpine high country, partly wooded foothills and valleys supplied by mountain streams.
Read the regional source ↗Finding your parcel within Sheridan County
The atlas lists 9 cities, towns, townships, and Census communities associated with Sheridan County, including Sheridan, Parkman, Story. 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 3.08 square miles of water within Sheridan County, or 0.1% of its total area. That share is close to Sheridan County’s 0.1%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Sheridan County has 194.1 times the land area of nearby Sheridan city (13 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Big Horn County, Campbell County, Johnson County within Wyoming. A tract near one of these lines should be matched to the county identifier on its own records.

