Ranking of Oregon Counties By Percentage of White 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 White Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 6.86%. Among all Oregon counties, Malheur County had the highest percentage of its White Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (14.62%), followed by Morrow County (14.24%), and Lake County (13.46%).

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 White Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Malheur County
Morrow County
Lake County
Umatilla County
Sherman County
Hood River County
Klamath County
Wasco County
Jefferson County
Wheeler County
Ranking of Oregon Counties By Percentage of White 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 Malheur County 14.62
2 Morrow County 14.24
3 Lake County 13.46
4 Umatilla County 13.08
5 Sherman County 12.48
6 Hood River County 11.53
7 Klamath County 10.43
7 Wasco County 10.43
8 Jefferson County 9.83
9 Wheeler County 9.80
10 Marion County 9.74
11 Harney County 9.51
12 Columbia County 9.39
13 Coos County 9.30
14 Grant County 9.28
15 Douglas County 9.19
16 Tillamook County 8.94
17 Linn County 8.84
18 Josephine County 8.75
19 Jackson County 8.54
20 Baker County 8.39
21 Crook County 8.34
22 Curry County 7.68
23 Yamhill County 7.63
24 Union County 7.00
25 Polk County 6.92
26 Clatsop County 6.77
27 Lane County 6.35
28 Gilliam County 6.24
29 Wallowa County 6.20
30 Lincoln County 5.94
31 Multnomah County 5.26
32 Washington County 5.24
33 Deschutes County 5.11
34 Clackamas County 4.76
35 Benton County 2.82