This page shows the correlation between the margin of victory for Joe Biden and the percentage of the total population who are fully vaccinated. Data is grouped by county.

Bubble size: Percent of Population Tested Positive from COVID
Black line: simple linear regression (R²: 0.6239)

County Population # Fully Vaccinated % of Pop. Vax Biden Margin
Thurston County 290,536 166,717 57.4% 18.6%
Yakima County 250,873 130,514 52.0% -7.7%
Adams County 19,983 9,709 48.6% -35.7%
Walla Walla County 60,760 33,901 55.8% -8.7%
Kitsap County 271,473 153,697 56.6% 18.1%
Garfield County 2,225 752 33.8% -47.2%
Pacific County 22,471 11,082 49.3% -1.1%
Whatcom County 229,247 145,720 63.6% 23.9%
Skagit County 129,205 75,545 58.5% 7.5%
Columbia County 3,985 1,670 41.9% -43.5%
Franklin County 95,222 40,445 42.5% -14.5%
Grant County 97,733 46,808 47.9% -34.4%
Pend Oreille County 13,724 4,777 34.8% -36.7%
Pierce County 904,980 493,684 54.6% 11.2%
Cowlitz County 110,593 56,714 51.3% -17.4%
Snohomish County 822,083 496,152 60.4% 20.6%
Okanogan County 42,243 25,628 60.7% -13.8%
Kittitas County 47,935 22,907 47.8% -10.2%
Lincoln County 10,939 5,092 46.5% -48.9%
Spokane County 522,798 275,651 52.7% -4.3%
Chelan County 77,200 47,565 61.6% -7.8%
Whitman County 50,104 20,290 40.5% 10.0%
Klickitat County 22,425 9,669 43.1% -9.4%
King County 2,252,782 1,579,020 70.1% 52.7%
Skamania County 12,083 4,129 34.2% -9.5%
Benton County 204,390 98,238 48.1% -21.0%
Mason County 66,768 34,868 52.2% -3.9%
Clallam County 77,331 47,278 61.1% 3.4%
Lewis County 80,707 35,735 44.3% -32.8%
Grays Harbor County 75,061 38,406 51.2% -6.6%
Douglas County 43,429 23,264 53.6% -24.1%
Clark County 488,241 274,323 56.2% 5.1%
Ferry County 7,627 3,667 48.1% -29.4%
San Juan County 17,582 12,921 73.5% 50.5%
Asotin County 22,582 8,214 36.4% -25.7%
Wahkiakum County 4,488 2,023 45.1% -19.3%
Jefferson County 32,221 22,731 70.5% 41.4%
Island County 85,141 49,005 57.6% 12.0%
Stevens County 45,723 15,587 34.1% -42.1%

Weird Data Notes

5/10/21: Virginia, Georgia, Massachusetts are reporting very weird numbers. CDC numbers do not match with state's numbers.

West Virginia, Vermont, Colorado, Hawaii and Texas aren't reporting their data at all.