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]
References
[change | change source]- ↑ "QuickFacts: Washington County, Oregon". United States Census Bureau. Retrieved August 18, 2023.
- ↑ 2.0 2.1 Proehl, Risa S. (March 2009). "2008 Oregon Population Report" (PDF). Population Research Center. Portland State University. p. 7. Archived from the original (PDF) on March 3, 2016. Retrieved May 5, 2009.
- ↑ "Find a County". National Association of Counties. Retrieved June 7, 2011.
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