Washington Citizen Voting-age Population By County in 2021 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2021, the citizen voting-age population for Washington was 5,413,415 and represented 71.07% of the total Washington population.
Among all Washington counties, King had the highest citizen voting-age population (1.53M), followed by Pierce (659.71K), and Snohomish (574.17K).
In terms of percentages, Jefferson had the highest percentage of its population being citizens of voting-age (86.33%), followed by San Juan (83.24%), and Ferry (81.81%).
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 | 1531345 | 68.34 |
| Pierce | 659705 | 72.48 |
| Snohomish | 574170 | 70.02 |
| Spokane | 403040 | 75.83 |
| Clark | 358990 | 72.31 |
| Thurston | 218820 | 75.29 |
| Kitsap | 211135 | 77.32 |
| Whatcom | 170805 | 76.07 |
| Yakima | 149320 | 58.52 |
| Benton | 137660 | 67.30 |
| Skagit | 93925 | 73.25 |
| Cowlitz | 82180 | 75.08 |
| Island | 68305 | 79.48 |
| Clallam | 62255 | 81.14 |
| Lewis | 61300 | 75.48 |
| Grant | 58025 | 59.29 |
| Grays Harbor | 57345 | 76.73 |
| Chelan | 53940 | 68.71 |
| Franklin | 51355 | 53.88 |
| Mason | 49850 | 76.73 |
| Walla Walla | 46240 | 74.38 |
| Whitman | 37910 | 78.66 |
| Stevens | 35760 | 77.65 |
| Kittitas | 35525 | 80.47 |
| Okanogan | 29295 | 69.81 |
| Jefferson | 28135 | 86.33 |
| Douglas | 27045 | 63.46 |
| Pacific | 18585 | 80.89 |
| Asotin | 17345 | 77.83 |
| Klickitat | 16910 | 75.22 |
| San Juan | 14675 | 83.24 |
| Pend Oreille | 10625 | 79.89 |
| Skamania | 9670 | 80.75 |
| Adams | 9550 | 46.92 |
| Lincoln | 8335 | 77.18 |
| Ferry | 5890 | 81.81 |
| Wahkiakum | 3540 | 80.91 |
| Columbia | 3125 | 78.72 |
| Garfield | 1790 | 78.51 |
