THE NIOBRARA COUNTY LAND BRIEF
Land in the
Powder River Basin setting.
Niobrara County has 2,626 square miles of land in Wyoming. 4 mapped landscape regions meet across Niobrara County: Powder River Basin, Sandy and Silty Tablelands, Semiarid Pierre Shale Plains, 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
Niobrara County intersects 4 mapped regional units. The largest mapped shares are:
- Powder River Basin56.6%
- Sandy and Silty Tablelands23.4%
- Semiarid Pierre Shale Plains13%
- Pine Bluffs and Hills7.1%
High Plains in Niobrara County
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.
Read the regional source ↗Finding your parcel within Niobrara County
The atlas lists 4 cities, towns, townships, and Census communities associated with Niobrara County, including Lance Creek, Lusk, Van Tassell. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Niobrara County by land and water
The Census records 1.92 square miles of water within Niobrara County, or 0.1% of its total area. That share is close to Niobrara County’s 0.1%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Niobrara County has 62.6 times the land area of nearby Lance Creek CDP (41.9 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Converse County, Goshen County, Platte County, Weston County within Wyoming. A tract near one of these lines should be matched to the county identifier on its own records.

