Ranking of California Counties By Percentage of Asian 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 Asian Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 11.55%. Among all California counties, Modoc County had the highest percentage of its Asian Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (40.91%), followed by Tehama County (40.34%), and Siskiyou County (37.63%).

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 Asian Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Modoc County
Tehama County
Siskiyou County
Amador County
Trinity County
Glenn County
Sutter County
Merced County
Lassen County
Madera County
Ranking of California Counties By Percentage of Asian 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 Modoc County 40.91
2 Tehama County 40.34
3 Siskiyou County 37.63
4 Amador County 34.22
5 Trinity County 31.88
6 Glenn County 31.72
7 Sutter County 31.21
8 Merced County 28.18
9 Lassen County 27.38
10 Madera County 27.25
11 Lake County 25.10
12 Del Norte County 22.79
13 Nevada County 21.94
14 Fresno County 21.72
15 Yuba County 20.39
16 Butte County 20.25
17 San Joaquin County 19.65
18 San Francisco County 19.61
19 Shasta County 17.89
19 Tulare County 17.89
20 Sacramento County 17.49
21 Mariposa County 17.44
22 Stanislaus County 17.03
23 Tuolumne County 15.15
24 Kern County 15.01
25 Humboldt County 14.34
26 Kings County 13.78
27 Imperial County 11.82
28 Sonoma County 11.68
29 Los Angeles County 11.27
30 Orange County 11.05
31 Inyo County 10.94
32 Calaveras County 10.81
33 Alameda County 10.59
34 Riverside County 10.28
35 San Diego County 10.02
36 San Luis Obispo County 9.74
37 Monterey County 9.33
38 Santa Barbara County 9.31
39 Solano County 8.94
39 Yolo County 8.94
40 San Bernardino County 8.80
41 Santa Clara County 8.65
42 Marin County 8.63
43 Contra Costa County 8.61
44 Santa Cruz County 8.29
45 San Mateo County 7.26
46 Napa County 6.89
47 El Dorado County 6.82
48 Ventura County 6.36
49 San Benito County 5.84
50 Placer County 5.08
51 Mendocino County 4.74
52 Colusa County 0.72
53 Alpine County 0.00
53 Mono County 0.00
53 Plumas County 0.00