Benton County on the map of Washington 2024. Cities, roads, borders and directions in Benton County of Washington.

Benton County is situated in the southern region of the state of Washington. This wonderful county is named after Thomas Hart Benton (1782-1858), a U.S. Senator from Missouri. The area of Benton County is about 1700 square miles. This county, created in 1905, is populated today by 207 thousand residents. Prosser is the county seat of Benton County. This map shows the borders of Benton County as well as neighboring counties, including major highways and natural objecsts as of 2024. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Benton County.