Ranking of California Counties By Percentage of Native Hawaiian And Pacific Islander 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 California Native Hawaiian And Pacific Islander Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 13.44%. Among all California counties, Colusa County had the highest percentage of its Native Hawaiian And Pacific Islander Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (61.29%), followed by Humboldt County (31.16%), and Inyo County (28.57%).

The chart below shows the top 10 California counties, and the table below shows the ranking of all California 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 California Counties By Percentage of Native Hawaiian And Pacific Islander Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Colusa County
Humboldt County
Inyo County
Tuolumne County
Nevada County
Sacramento County
Siskiyou County
Stanislaus County
Sutter County
Solano County
Ranking of California Counties By Percentage of Native Hawaiian And Pacific Islander 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 Colusa County 61.29
2 Humboldt County 31.16
3 Inyo County 28.57
4 Tuolumne County 27.08
5 Nevada County 25.00
6 Sacramento County 22.68
7 Siskiyou County 21.67
8 Stanislaus County 21.10
9 Sutter County 19.89
10 Solano County 18.53
11 Fresno County 18.00
12 San Luis Obispo County 17.47
13 Lassen County 17.39
14 El Dorado County 17.33
15 Monterey County 17.01
16 Contra Costa County 15.71
16 Shasta County 15.71
17 Butte County 15.55
18 Alameda County 15.50
19 Tulare County 15.21
20 Madera County 14.89
21 Riverside County 14.32
22 Sonoma County 14.25
23 Merced County 14.02
24 San Joaquin County 13.63
25 Ventura County 12.88
26 Placer County 12.25
27 Marin County 12.00
28 Kern County 11.85
29 Los Angeles County 11.47
30 Amador County 11.11
31 San Francisco County 10.76
32 Lake County 10.61
33 San Diego County 10.33
34 San Mateo County 9.63
35 Santa Barbara County 9.27
36 Mendocino County 8.91
37 Santa Cruz County 8.06
38 Santa Clara County 8.02
39 Orange County 7.76
40 San Bernardino County 6.70
41 Yolo County 4.66
42 Yuba County 2.78
43 Kings County 2.49
44 Calaveras County 0.00
44 Del Norte County 0.00
44 Glenn County 0.00
44 Imperial County 0.00
44 Mariposa County 0.00
44 Napa County 0.00
44 Plumas County 0.00
44 San Benito County 0.00
44 Tehama County 0.00
44 Trinity County 0.00