THE BENTON COUNTY LAND BRIEF
Land in the
Pleistocene Lake Basins setting.
Benton County has 1,700.1 square miles of land in Washington. 2 mapped landscape regions meet across Benton County: Pleistocene Lake Basins, Yakima Folds.
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
Benton County intersects 2 mapped regional units. The largest mapped shares are:
- Pleistocene Lake Basins60.6%
- Yakima Folds39.4%
Finding your parcel within Benton County
The atlas lists 6 cities, towns, townships, and Census communities associated with Benton County, including Richland, Kennewick, West Richland. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Benton County by land and water
The Census records 59.6 square miles of water within Benton County, or 3.4% of its total area. That share is close to Benton County’s 3.4%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Benton County has 683.1 times the land area of nearby Benton City city (2.49 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Franklin County, Grant County, Klickitat County, Walla Walla County, Yakima County within Washington. A tract near one of these lines should be matched to the county identifier on its own records.

