Ranking of Washington Counties By Percentage of Population Aged 25 years and above with an Educational attainment of Bachelors or Higher in 2021 (ACS-5Yrs)

Updated on September 3, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the population of Washington (aged 25 years and above) who had an educational attainment of Bachelors or Higher was 37.28%. Among all Washington counties, King County had the highest percentage of its population (aged 25 years and above) with an educational attainment of Bachelors or Higher (54.03%), followed by San Juan County (51.28%), and Whitman County (47.65%).

The chart below shows the top 10 Washington counties, and the table below shows the ranking of all Washington counties.

You can see similar information for other educational attainments.

You can also see similar information for other states and for the United States.

Ranking of Washington Counties By Percentage of Population (Aged 25yrs+) with an Educational Attainment of Bachelors or Higher in 2021
King County
San Juan County
Whitman County
Jefferson County
Whatcom County
Thurston County
Kittitas County
Kitsap County
Island County
Snohomish County
Ranking of Washington Counties By Percentage of Population (Aged 25yrs+) with an Educational Attainment of Bachelors or Higher in 2021
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Rank County Percentage of Population (Aged 25yrs+) (%)
1 King County 54.03
2 San Juan County 51.28
3 Whitman County 47.65
4 Jefferson County 42.71
5 Whatcom County 36.38
6 Thurston County 36.19
7 Kittitas County 35.32
8 Kitsap County 35.02
9 Island County 34.97
10 Snohomish County 34.11
11 Benton County 32.13
12 Clark County 31.96
13 Spokane County 31.52
14 Klickitat County 31.10
15 Clallam County 30.02
16 Skagit County 28.64
17 Chelan County 28.56
18 Pierce County 28.41
19 Walla Walla County 28.39
20 Columbia County 26.81
21 Skamania County 25.87
22 Garfield County 25.42
23 Lincoln County 24.31
24 Asotin County 23.68
25 Pacific County 22.37
26 Pend Oreille County 22.15
27 Wahkiakum County 21.30
28 Douglas County 21.19
28 Okanogan County 21.19
29 Stevens County 20.84
30 Franklin County 19.80
31 Lewis County 19.03
32 Mason County 18.73
33 Grant County 18.08
34 Ferry County 17.92
35 Yakima County 17.85
36 Cowlitz County 17.01
37 Grays Harbor County 16.32
38 Adams County 13.72