THE STANLEY COUNTY LAND BRIEF
Land in the
Subhumid Pierre Shale Plains setting.
Stanley County has 1,444.4 square miles of land in South Dakota. 2 mapped landscape regions meet across Stanley County: Subhumid Pierre Shale Plains, River Breaks.
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
Stanley County intersects 2 mapped regional units. The largest mapped shares are:
- Subhumid Pierre Shale Plains50.2%
- River Breaks49.8%
Finding your parcel within Stanley County
The atlas lists 1 cities, towns, townships, and Census communities associated with Stanley County, including Fort Pierre. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Stanley County by land and water
The Census records 72.7 square miles of water within Stanley County, or 4.8% of its total area. That share is close to Stanley County’s 4.8%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Stanley County has 463.1 times the land area of nearby Fort Pierre city (3.12 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Dewey County, Haakon County, Hughes County, Jones County, Lyman County, Sully County, Ziebach County within South Dakota. A tract near one of these lines should be matched to the county identifier on its own records.

