Total Population in Washington County, OR
ACS 2024 5-Year Estimates
How Washington County Compares
National Distribution
Where Washington County falls among all 3,222 U.S. counties for total population.
■ Washington County: 603,947
Ranking Context
| Rank | County | Value |
|---|---|---|
| #111 | Western Connecticut Planning Region, CT | 627,071 |
| #112 | Johnson County, KS | 620,631 |
| #113 | Pasco County, FL | 611,444 |
| #114 | Washington County, OR | 603,947 |
| #115 | Anne Arundel County, MD | 598,166 |
| #116 | Douglas County, NE | 590,736 |
| #117 | Bristol County, MA | 582,270 |
Total Population in Washington County, Oregon
Washington County, Oregon has a total population of 603,947, which ranks #114 of 3,222 out of 3,222 counties nationwide. This is 99.8% below the national value of 330M.
Within Oregon, Washington County ranks #2 of 36 out of 36 counties. This places it in the 96th percentile nationally.
Total population count from the American Community Survey. All data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates for 2024.
About this data
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.