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Benton County
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Not who you're looking for? Others named Benton County: county in Tennessee, United States · county in Mississippi, United States · county in Missouri, United States · county in Arkansas, United States
Benton County is a county in the south-central portion of the U.S. state of Washington. As of the 2020 census, its population was 206,873. The county seat is Prosser, and its most populous city is Kennewick. The Columbia River demarcates the county's north, south, and east boundaries.