Columbia County is a county located in the U.S. state of Washington. As of 2000, the population was 4,064. The county seat is at Dayton.
History
Columbia County was created out of Walla Walla County on November 11, 1875.
| Columbia County Washington Cities/Towns - Dayton (County Seat), Starbuck |
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Your Ad Here Columbia County is a county located in the U.S. state of Washington. As of 2000, the population was 4,064. The county seat is at Dayton. History Columbia County was created out of Walla Walla County on November 11, 1875. |