Ranking of Washington Counties By Percentage of Black or African American Alone Population Aged 25 years and above with an Educational attainment of Less than High School Diploma in 2021 (ACS-5Yrs)

Updated on September 5, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the Washington Black or African American Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 8.83%. Among all Washington counties, Columbia County had the highest percentage of its Black or African American Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (100.00%), followed by Stevens County (42.57%), and Skamania County (40.00%).

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, and for other races and ethnicities.

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

Ranking of Washington Counties By Percentage of Black or African American Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Columbia County
Stevens County
Skamania County
Grant County
Walla Walla County
Asotin County
Whitman County
Ferry County
Adams County
Clallam County
Ranking of Washington Counties By Percentage of Black or African American Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
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Rank County Percentage of Population (Aged 25yrs+) (%)
1 Columbia County 100.00
2 Stevens County 42.57
3 Skamania County 40.00
4 Grant County 25.05
5 Walla Walla County 24.46
6 Asotin County 21.74
7 Whitman County 21.56
8 Ferry County 21.43
9 Adams County 15.79
10 Clallam County 14.12
11 Cowlitz County 11.73
12 Franklin County 11.50
13 Spokane County 10.48
14 King County 10.47
15 Whatcom County 9.87
16 Yakima County 8.12
17 Snohomish County 7.56
18 Pierce County 7.18
19 Skagit County 6.57
20 Benton County 5.53
21 Clark County 5.36
22 Thurston County 4.66
23 San Juan County 4.49
24 Lewis County 4.46
25 Douglas County 4.13
26 Grays Harbor County 4.01
27 Island County 2.77
28 Mason County 2.60
29 Kitsap County 2.04
30 Klickitat County 1.75
31 Kittitas County 1.64
32 Jefferson County 0.56
33 Chelan County 0.00
33 Lincoln County 0.00
33 Okanogan County 0.00
33 Pacific County 0.00
33 Pend Oreille County 0.00
33 Wahkiakum County 0.00