THE GRANT COUNTY LAND BRIEF
Land in the
Pleistocene Lake Basins setting.
Grant County has 2,679.6 square miles of land in Washington. 4 mapped landscape regions meet across Grant County: Pleistocene Lake Basins, Channeled Scablands, Loess Islands, 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
Grant County intersects 4 mapped regional units. The largest mapped shares are:
- Pleistocene Lake Basins52.8%
- Channeled Scablands23%
- Loess Islands16.1%
- Yakima Folds8%
Finding your parcel within Grant County
The atlas lists 26 cities, towns, townships, and Census communities associated with Grant County, including Moses Lake, Ephrata, Quincy. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Grant County by land and water
The Census records 111.9 square miles of water within Grant County, or 4% of its total area. That share is close to Grant County’s 4%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Grant County has 468.3 times the land area of nearby Moses Lake North CDP (5.72 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Adams County, Benton County, Douglas County, Franklin County, Kittitas County, Lincoln County, Okanogan County, Yakima County within Washington. A tract near one of these lines should be matched to the county identifier on its own records.

