THE CASSIA COUNTY LAND BRIEF
Land in the
Semiarid Hills and Low Mountains setting.
Cassia County has 2,565.6 square miles of land in Idaho. 8 mapped landscape regions meet across Cassia County: Semiarid Hills and Low Mountains, Saltbush-Dominated Valleys, Magic Valley, among others.
Lava plains, stony uplands, dry valleys and scattered ranges form the Northern Basin and Range. Sagebrush and grassland give way to juniper and other woodland in higher or rockier settings.
Regional context: Northern Basin and Range ↗ · Regional mapping across the county footprint
Where the landscape changes
Cassia County intersects 8 mapped regional units. The largest mapped shares are:
- Semiarid Hills and Low Mountains38.6%
- Saltbush-Dominated Valleys17.3%
- Magic Valley15.2%
- Sagebrush Steppe Valleys14.6%
- Eastern Snake River Basalt Plains6.7%
Snake River Plain in Cassia County
The Snake River Plain is lower and gentler than its surrounding mountains. Alluvial valleys, sagebrush-covered plains, low hills and scattered lava fields form its principal landscape patterns.
Read the regional source ↗Central Basin and Range in Cassia County
North-trending mountain blocks separate dry interior basins. Alluvial fans connect the ranges to valley floors, while vegetation changes from sparse basin shrubs to woodland and forest at higher elevations.
Read the regional source ↗Finding your parcel within Cassia County
The atlas lists 5 cities, towns, townships, and Census communities associated with Cassia County, including Burley, Oakley, Malta. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Cassia County by land and water
The Census records 15.1 square miles of water within Cassia County, or 0.6% of its total area. That share is close to Cassia County’s 0.6%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Cassia County has 5,447.2 times the land area of nearby Albion city (0.47 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Blaine County, Jerome County, Minidoka County, Oneida County, Power County, Twin Falls County within Idaho. A tract near one of these lines should be matched to the county identifier on its own records.

