Total Population in San Juan County, WA
ACS 2024 5-Year Estimates
18,478
Rank #1,962/3,222 · #32 in WA
39th
San Juan 18,478
WA 7,816,116 -99.8%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How San Juan County's total population of 18,478 compares to all 3,222 U.S. counties. Values range from 33 to 9,808,667.
Distribution of Total Population Across All Counties
Ranking Context
Counties ranked closest to San Juan County for total population.
Nearby Rankings
Full ranking →| #1,959 | Poweshiek County, IA | 18,545 |
| #1,960 | Crawford County, IL | 18,511 |
| #1,961 | Appling County, GA | 18,493 |
| #1,962 | San Juan County, WA | 18,478 |
| #1,963 | Sawyer County, WI | 18,476 |
| #1,964 | Deaf Smith County, TX | 18,460 |
| #1,965 | Dickinson County, KS | 18,445 |
About Total Population
San Juan County, Washington has a total population of 18,478, ranking #1,962 of 3,222 counties nationwide — 100.0% below the national value of 330M. Within Washington, it ranks #32 of 39. This places it in the 39th percentile nationally.
Total population count from the American Community Survey. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.