THE SIOUX COUNTY LAND BRIEF
Land in the
Sandy and Silty Tablelands setting.
Sioux County has 2,066.7 square miles of land in Nebraska. 7 mapped landscape regions meet across Sioux County: Sandy and Silty Tablelands, Pine Ridge Escarpment, Semiarid Pierre Shale Plains, among others.
Broad, comparatively smooth plains distinguish the High Plains from neighboring broken terrain. The natural grassland setting is drier and higher than the Central Great Plains to the east.
Regional context: High Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Sioux County intersects 7 mapped regional units. The largest mapped shares are:
- Sandy and Silty Tablelands61.9%
- Pine Ridge Escarpment15%
- Semiarid Pierre Shale Plains11.9%
- White River Badlands6.7%
- Platte River Valley and Terraces3.5%
Northwestern Great Plains in Sioux County
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.
Read the regional source ↗Nebraska Sand Hills in Sioux County
Grass-covered sand dunes form the Sandhills' distinctive rolling landscape. Lakes and wetlands occur in many areas between dunes, while tree cover is limited away from some river corridors.
Read the regional source ↗Finding your parcel within Sioux County
The atlas lists 1 cities, towns, townships, and Census communities associated with Sioux County, including Harrison. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Sioux County by land and water
The Census records 0.64 square miles of water within Sioux County, or 0% of its total area. That share is close to Sioux County’s 0%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Sioux County has 6,754 times the land area of nearby Harrison village (0.31 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Box Butte County, Dawes County, Scotts Bluff County within Nebraska. A tract near one of these lines should be matched to the county identifier on its own records.

