Ranking of Oregon Counties By Percentage of American Indian and Alaska Native 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 Oregon American Indian and Alaska Native Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 16.92%. Among all Oregon counties, Morrow County had the highest percentage of its American Indian and Alaska Native Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (59.63%), followed by Sherman County (50.00%), and Benton County (34.34%).

The chart below shows the top 10 Oregon counties, and the table below shows the ranking of all Oregon 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 Oregon Counties By Percentage of American Indian and Alaska Native Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Morrow County
Sherman County
Benton County
Malheur County
Crook County
Grant County
Marion County
Polk County
Curry County
Josephine County
Ranking of Oregon Counties By Percentage of American Indian and Alaska Native 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 Morrow County 59.63
2 Sherman County 50.00
3 Benton County 34.34
4 Malheur County 32.30
5 Crook County 29.95
6 Grant County 28.95
7 Marion County 27.00
8 Polk County 26.49
9 Curry County 23.17
10 Josephine County 21.54
11 Harney County 21.31
12 Coos County 20.93
13 Union County 20.00
14 Washington County 18.52
15 Multnomah County 17.02
16 Yamhill County 16.74
17 Columbia County 16.16
18 Umatilla County 16.11
19 Wasco County 15.94
20 Tillamook County 15.53
21 Jackson County 14.67
22 Lane County 13.96
23 Jefferson County 13.64
24 Klamath County 12.42
25 Lincoln County 12.14
26 Deschutes County 12.01
27 Lake County 8.23
28 Clackamas County 7.98
29 Douglas County 7.54
30 Hood River County 5.46
31 Clatsop County 4.64
32 Linn County 4.38
33 Baker County 0.48
34 Gilliam County 0.00
34 Wallowa County 0.00
34 Wheeler County 0.00