County
· Washington
Columbia County
Columbia County is a county located in the U.S. state of Washington. As of the 2020 census, the population was 3,952, making it the second-least populous county in Washington. The county seat and largest city is Dayton. The county was created out of Walla Walla County on November 11, 1875, and is named after the Columbia River. Columbia County is included in the Walla Walla, WA Metropolitan Statistical Area.
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Cities and towns 2
Reference data (Census of Governments 2022)
- Census ID (PID6)
- 114606
- FIPS state
- 53
- FIPS county
- 013
- FIPS place
- 99013
- Census record name
- COUNTY OF COLUMBIA
- Mailing address
- 114 S 2ND ST, DAYTON 99328