Ranking of California Counties By Percentage of Population that are Asian Alone in 2018

Updated on June 18, 2025.

Based on the US Census Vintage data estimates, in 2018, among all California counties, Santa Clara County had the highest percentage of its population who identified their race as Asian Alone (38.64%), followed by San Francisco County (35.78%), and Alameda County (32.02%).

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 2018
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 2018
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Rank County % of County Population
1 Santa Clara County 38.64
2 San Francisco County 35.78
3 Alameda County 32.02
4 San Mateo County 30.24
5 Orange County 21.69
6 Contra Costa County 18.06
7 San Joaquin County 17.26
8 Sutter County 17.25
9 Sacramento County 17.01
10 Solano County 16.16
11 Los Angeles County 15.51
12 Yolo County 15.04
13 San Diego County 12.56
14 Fresno County 11.28
15 Napa County 8.81
16 Placer County 8.09
17 Merced County 8.04
18 San Bernardino County 8
19 Ventura County 7.83
20 Yuba County 7.43
21 Riverside County 7.19
22 Monterey County 6.75
23 Marin County 6.51
24 Stanislaus County 6.08
25 Santa Barbara County 5.99
26 Kern County 5.41
27 Santa Cruz County 5.17
28 Butte County 4.91
29 El Dorado County 4.7
30 Sonoma County 4.55
31 Kings County 4.42
32 Tulare County 4.07
33 San Luis Obispo County 3.94
34 San Benito County 3.68
35 Del Norte County 3.22
36 Shasta County 3.12
37 Glenn County 2.91
38 Humboldt County 2.9
39 Mono County 2.56
40 Madera County 2.53
41 Alpine County 2.22
42 Mendocino County 2.15
43 Imperial County 2.14
44 Calaveras County 1.74
45 Mariposa County 1.68
46 Amador County 1.65
47 Inyo County 1.64
48 Colusa County 1.55
49 Siskiyou County 1.53
50 Lassen County 1.52
51 Tehama County 1.46
52 Trinity County 1.41
52 Tuolumne County 1.41
53 Lake County 1.38
53 Nevada County 1.38
54 Modoc County 1.25
55 Plumas County 1.09
56 Sierra County 0.78