Ranking of California Counties By Percentage of Non-Hispanic 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 California Non-Hispanic White Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 4.69%. Among all California counties, Del Norte County had the highest percentage of its Non-Hispanic White Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (12.60%), followed by Yuba County (12.43%), and Merced County (11.85%).

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 Non-Hispanic White Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Del Norte County
Yuba County
Merced County
Modoc County
Tulare County
Stanislaus County
Kern County
Glenn County
Madera County
Sutter County
Ranking of California Counties By Percentage of Non-Hispanic 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 Del Norte County 12.60
2 Yuba County 12.43
3 Merced County 11.85
4 Modoc County 10.60
5 Tulare County 9.60
6 Stanislaus County 9.50
7 Kern County 9.45
8 Glenn County 9.30
9 Madera County 8.95
10 Sutter County 8.62
11 Lassen County 8.40
12 San Joaquin County 8.33
13 Kings County 8.14
14 Lake County 8.11
15 San Bernardino County 7.72
16 Shasta County 7.37
17 Mariposa County 7.33
18 Humboldt County 7.21
19 Tehama County 7.17
20 Imperial County 7.04
21 Siskiyou County 6.99
22 Mendocino County 6.97
23 Calaveras County 6.68
24 Fresno County 6.65
25 Butte County 6.37
26 Trinity County 5.73
27 Riverside County 5.60
27 Tuolumne County 5.60
28 Sacramento County 5.59
29 Colusa County 5.39
30 Amador County 5.35
31 Monterey County 4.99
31 Plumas County 4.99
32 Solano County 4.71
33 Los Angeles County 4.66
34 San Benito County 4.46
35 Yolo County 4.37
36 Inyo County 3.75
37 Napa County 3.74
38 Placer County 3.68
39 San Diego County 3.65
40 Sierra County 3.63
41 San Luis Obispo County 3.58
42 Sonoma County 3.57
43 Mono County 3.48
44 El Dorado County 3.40
45 Nevada County 3.35
46 Ventura County 3.29
47 Alameda County 3.25
48 Orange County 3.20
49 Santa Barbara County 3.13
50 Santa Clara County 3.11
51 Contra Costa County 2.99
52 San Mateo County 2.71
53 Santa Cruz County 2.43
54 Alpine County 2.31
55 Marin County 1.93
56 San Francisco County 1.64