Columbia County, Washington
Columbia County is a county in the U.S. state of Washington. The county seat is Dayton. 3,952 people lived there at the 2020 census[1] which makes it the third-least populous county in Washington. The county was created out of Walla Walla County on November 11, 1875[2] and is named after the Columbia River.
| Columbia County, Washington | |
| Map | |
 Location in the state of Washington | |
 Washington's location in the U.S. | |
| Statistics | |
| Founded | November 11, 1875 |
|---|---|
| Seat | Dayton |
| Largest City | Dayton |
| Area - Total - Land - Water |
873 sq mi (2,261 km²) 869 sq mi (2,251 km²) 4.9 sq mi (13 km²), 0.6% |
| Population - Density |
4.6/sq mi (2/km²) |
| Time zone | Pacific: UTC-8/-7 |
| Website: www.columbiaco.com | |
| Named for: Columbia River | |
Columbia County, Washington Media
The Columbia County Courthouse in Dayton, one of the 20 NRHP-listed places in the county
References
- ↑ "QuickFacts: Columbia County, Washington". United States Census Bureau. Retrieved January 20, 2024.
- ↑ "Milestones for Washington State History — Part 2: 1851 to 1900". HistoryLink.org. March 6, 2003.
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