Washington Citizen Voting-age Population By County in 2024 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2024, the citizen voting-age population for Washington was 5,583,139 and represented 71.43% of the total Washington population.
Among all Washington counties, King had the highest citizen voting-age population (1.56M), followed by Pierce (676.96K), and Snohomish (585.93K).
In terms of percentages, Jefferson had the highest percentage of its population being citizens of voting-age (86.99%), followed by San Juan (84.40%), and Clallam (82.44%).
The chart and table below shows the citizen voting-age population of each county and the percentage of each county's population that were citizens of voting-age.
You can see similar information for other states and by state for the United States.
| County | Citizen Voting-age Population | % of County Population |
|---|---|---|
| King | 1564199 | 68.39 |
| Pierce | 676964 | 72.77 |
| Snohomish | 585933 | 69.39 |
| Spokane | 419776 | 76.45 |
| Clark | 378085 | 73.14 |
| Thurston | 227096 | 75.94 |
| Kitsap | 215858 | 77.68 |
| Whatcom | 178126 | 77.28 |
| Yakima | 153356 | 59.64 |
| Benton | 144825 | 68.02 |
| Skagit | 97935 | 74.57 |
| Cowlitz | 84596 | 75.29 |
| Island | 69508 | 80.04 |
| Lewis | 64394 | 75.62 |
| Clallam | 64145 | 82.44 |
| Grant | 61010 | 59.93 |
| Grays Harbor | 59336 | 77.01 |
| Franklin | 56146 | 56.77 |
| Chelan | 55974 | 69.82 |
| Mason | 52127 | 76.68 |
| Walla Walla | 46523 | 74.84 |
| Kittitas | 38188 | 80.96 |
| Stevens | 37662 | 78.35 |
| Whitman | 37497 | 79.78 |
| Okanogan | 29999 | 69.08 |
| Jefferson | 29206 | 86.99 |
| Douglas | 28541 | 64.33 |
| Pacific | 19734 | 82.26 |
| Klickitat | 18038 | 77.05 |
| Asotin | 17729 | 78.92 |
| San Juan | 15596 | 84.40 |
| Pend Oreille | 11230 | 79.93 |
| Skamania | 10112 | 81.52 |
| Adams | 9903 | 47.61 |
| Lincoln | 8883 | 77.32 |
| Ferry | 6054 | 81.92 |
| Wahkiakum | 3817 | 81.91 |
| Columbia | 3171 | 79.00 |
| Garfield | 1859 | 79.01 |
