Ranking of California Counties By Percentage of Population that are Asian Alone in 2020

Updated on June 18, 2025.

Based on the US Census Vintage data estimates, in 2020, among all California counties, Santa Clara County had the highest percentage of its population who identified their race as Asian Alone (39.75%), followed by San Francisco County (36.13%), and Alameda County (32.55%).

The chart below shows the top 10 counties, and the table below shows the ranking of all California counties.

You can see similar ranking information for other racial and ethnicity groups in the United States.

You can also see similar information for other states, and also the ranking of all counties in the United States.

See this for other years:
Ranking of California Counties By Percentage of Pop. that are Asian Alone in 2020
Santa Clara
San Francisco
Alameda
San Mateo
Orange
Contra Costa
San Joaquin
Sutter
Sacramento
Solano
Ranking of California Counties By Percentage of Pop. that are Asian Alone in 2020
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Rank County % of County Population
1 Santa Clara County 39.75
2 San Francisco County 36.13
3 Alameda County 32.55
4 San Mateo County 31.08
5 Orange County 22.39
6 Contra Costa County 18.73
7 San Joaquin County 18.19
8 Sutter County 17.66
9 Sacramento County 17.5
10 Solano County 16.45
11 Los Angeles County 15.76
12 Yolo County 14.85
13 San Diego County 12.89
14 Fresno County 11.66
15 Napa County 8.97
16 Placer County 8.71
17 San Bernardino County 8.53
18 Ventura County 7.98
19 Merced County 7.84
20 Yuba County 7.7
21 Riverside County 7.5
22 Monterey County 6.67
23 Marin County 6.62
24 Stanislaus County 6.24
25 Santa Barbara County 5.97
26 Kern County 5.6
27 Butte County 5.17
28 Santa Cruz County 5.15
29 El Dorado County 5.02
30 Sonoma County 4.64
31 San Benito County 4.33
32 Kings County 4.31
33 Tulare County 4.16
34 San Luis Obispo County 4.04
35 Del Norte County 3.28
36 Shasta County 3.19
37 Glenn County 2.96
38 Humboldt County 2.94
39 Madera County 2.63
40 Mono County 2.43
41 Mendocino County 2.25
42 Imperial County 2.15
43 Trinity County 1.94
44 Alpine County 1.91
45 Calaveras County 1.88
46 Amador County 1.73
47 Inyo County 1.64
47 Lassen County 1.64
48 Colusa County 1.61
48 Mariposa County 1.61
49 Siskiyou County 1.56
50 Tuolumne County 1.5
51 Nevada County 1.47
52 Lake County 1.43
52 Tehama County 1.43
53 Modoc County 1.23
54 Plumas County 1.07
55 Sierra County 0.87