Washington County Profiles

Below are profiles for all 39 counties in Washington State, including information on population size and links to the county website, county codes, budget, comprehensive plan, and county officials.

Want to search multiple county codes or websites at once? See our City and County Websites Search and Washington County Codes.

The population figures shown below reflect the official April 1, 2023 total countywide (incorporated plus unincorporated) population estimates released by the Washington Office of Financial Management (OFM).

The 2024 population estimates will be released around June 30, 2024. To see recent population trends or a county's unincorporated population, refer to our Tax and Population Data topic page.