Washington Citizen Voting-age Population By County in 2016 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2016, the citizen voting-age population for Washington was 5,008,035 and represented 70.80% of the total Washington population.
Among all Washington counties, King had the highest citizen voting-age population (1.44M), followed by Pierce (599.79K), and Snohomish (534.20K).
In terms of percentages, Jefferson had the highest percentage of its population being citizens of voting-age (84.33%), followed by San Juan (82.90%), and Wahkiakum (82.72%).
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 | 1436280 | 69.07 |
| Pierce | 599795 | 72.01 |
| Snohomish | 534200 | 70.42 |
| Spokane | 364860 | 75.10 |
| Clark | 317385 | 70.39 |
| Thurston | 199825 | 75.04 |
| Kitsap | 198030 | 76.91 |
| Whatcom | 157660 | 75.17 |
| Yakima | 142095 | 57.37 |
| Benton | 127130 | 67.80 |
| Skagit | 86200 | 71.55 |
| Cowlitz | 76780 | 74.65 |
| Island | 63030 | 78.67 |
| Clallam | 58510 | 80.18 |
| Lewis | 56900 | 75.14 |
| Grays Harbor | 54210 | 76.10 |
| Chelan | 51850 | 69.36 |
| Grant | 51245 | 55.38 |
| Mason | 47005 | 76.98 |
| Franklin | 44920 | 51.16 |
| Walla Walla | 42760 | 71.49 |
| Whitman | 37145 | 78.21 |
| Kittitas | 33820 | 79.05 |
| Stevens | 33545 | 76.68 |
| Okanogan | 28865 | 69.89 |
| Jefferson | 25580 | 84.33 |
| Douglas | 25485 | 63.55 |
| Asotin | 17385 | 78.61 |
| Pacific | 16470 | 79.39 |
| Klickitat | 15715 | 75.08 |
| San Juan | 13310 | 82.90 |
| Pend Oreille | 10220 | 78.61 |
| Adams | 8945 | 46.83 |
| Skamania | 8615 | 76.14 |
| Lincoln | 7990 | 77.39 |
| Ferry | 6130 | 80.24 |
| Wahkiakum | 3350 | 82.72 |
| Columbia | 3120 | 78.59 |
| Garfield | 1670 | 74.89 |
