Washington County, Oregon

Washington County is one of 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 600,372,[1] making it the state's second most populous county.[2] The county seat and largest city is Hillsboro.[2][3]

Washington County, Oregon Media

References

  1. ↑ QuickFacts: Washington County, Oregon. United States Census Bureau. Retrieved August 18, 2023.
  2. ↑ 2.0 2.1 Proehl, Risa S.. 2008 Oregon Population Report. Population Research Center (March 2009)Portland State University. p. 7. Retrieved May 5, 2009.
  3. ↑ Find a CountyNational Association of Counties. Retrieved June 7, 2011.