Washington
Demographics by Cubit
Washington / Counties by Population
Below are the 39 Washington counties sorted by population from 1 to 39 . The population data are from the 2020 Census Redistricting dataset. If 2020 Census data are not available for a geography, then the population data are from the Census’ 2019 American Community Survey.
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| Rank | County | Population |
|---|---|---|
| 1 | King County | 2,195,502 |
| 2 | Pierce County | 877,013 |
| 3 | Snohomish County | 798,808 |
| 4 | Spokane County | 505,505 |
| 5 | Clark County | 473,252 |
| 6 | Thurston County | 279,711 |
| 7 | Kitsap County | 265,882 |
| 8 | Yakima County | 249,697 |
| 9 | Whatcom County | 220,821 |
| 10 | Benton County | 197,518 |
| 11 | Skagit County | 125,612 |
| 12 | Cowlitz County | 106,778 |
| 13 | Grant County | 95,502 |
| 14 | Franklin County | 92,009 |
| 15 | Island County | 82,866 |
| 16 | Lewis County | 78,145 |
| 17 | Chelan County | 76,229 |
| 18 | Clallam County | 75,392 |
| 19 | Grays Harbor County | 72,779 |
| 20 | Mason County | 63,804 |
| 21 | Walla Walla County | 60,365 |
| 22 | Whitman County | 49,231 |
| 23 | Kittitas County | 45,897 |
| 24 | Stevens County | 44,655 |
| 25 | Douglas County | 42,023 |
| 26 | Okanogan County | 41,842 |
| 27 | Jefferson County | 31,285 |
| 28 | Asotin County | 22,421 |
| 29 | Klickitat County | 21,721 |
| 30 | Pacific County | 21,688 |
| 31 | Adams County | 19,594 |
| 32 | San Juan County | 16,788 |
| 33 | Pend Oreille County | 13,377 |
| 34 | Skamania County | 11,753 |
| 35 | Lincoln County | 10,574 |
| 36 | Ferry County | 7,578 |
| 37 | Wahkiakum County | 4,268 |
| 38 | Columbia County | 3,992 |
| 39 | Garfield County | 2,230 |
|
United States Census Bureau. B01001 SEX BY AGE, 2019 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 10 December 2020. http://www.census.gov/. |
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