WA-List » Columbia County

Columbia County

FACT SHEET

  • Name origin: Named for the mighty Northwest river.
  • Established: 1875 Nov 11
  • County seat: Dayton
  • County government website
  • Upcoming events (via WA-List’s events calendar)
  • Population (2010): 4,078 (Rank: 37 of 39)
  • Area (2010): 868.63 square miles (Rank: 31 of 39)
  • Density (2010): 4.7 people per square miles (Rank: 36 of 39)
  • Highest elevation: 6,387 feet, Oregon Butte.

 


Cities and Towns Population Area Density Elevation Zip code
(sq miles) (pop/sq miles) (feet)
1. Dayton city 2,526 1.43 1,766.4 1,612 99328
2. Starbuck town 129  0.21 614.2 645 99359

 


Additional facts

  • The Columbia River flows through 18 counties in Washington state, but ironically Columbia County is not one of them.
  • Columbia County has the 3rd smallest population in Washington, and the 4th smallest population density.
  • Starbuck is the 5th smallest town in Washington by population.

Notes

  • This page is updated periodically in an effort to keep information accurate and offer additional data.
  • = link to map
  • All population and area data are from the 2010 United States Census. All population density figures for cities greater than 5,000 people are as well. Densities of smaller towns and cities were calculated separately using US Census data.
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