THE ADAMS COUNTY LAND BRIEF
Land in the
Loess Islands setting.
Adams County has 1,925 square miles of land in Washington. 4 mapped landscape regions meet across Adams County: Loess Islands, Channeled Scablands, Pleistocene Lake Basins, among others.
Basalt underlies this dry plateau of grassland and sagebrush. Windblown soils cover some uplands, while ancient flood paths exposed rock across the region's scabland terrain.
Regional context: Columbia Plateau ↗ · Regional mapping across the county footprint
Where the landscape changes
Adams County intersects 4 mapped regional units. The largest mapped shares are:
- Loess Islands60.3%
- Channeled Scablands29.5%
- Pleistocene Lake Basins8.9%
- Yakima Folds1.2%
Finding your parcel within Adams County
The atlas lists 5 cities, towns, townships, and Census communities associated with Adams County, including Othello, Ritzville, Lind. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Adams County by land and water
The Census records 4.81 square miles of water within Adams County, or 0.2% of its total area. That share is close to Adams County’s 0.2%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Adams County has 1,742.1 times the land area of nearby Lind town (1.11 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Franklin County, Grant County, Lincoln County, Whitman County within Washington. A tract near one of these lines should be matched to the county identifier on its own records.

