Ranking of California Counties By Percentage of Population that are Two Or More Races in 2018

Updated on June 18, 2025.

Based on the US Census Vintage data estimates, in 2018, among all California counties, Solano County had the highest percentage of its population who identified their race as Two Or More Races (7.23%), followed by Sacramento County (6.62%), and Yuba County (6.4%).

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 Two Or More Races in 2018
Solano
Sacramento
Yuba
Humboldt
Yolo
Contra Costa
Siskiyou
Alameda
San Joaquin
Trinity
Ranking of California Counties By Percentage of Pop. that are Two Or More Races in 2018
0 of 0
Rank County % of County Population
1 Solano County 7.23
2 Sacramento County 6.62
3 Yuba County 6.4
4 Humboldt County 5.74
5 Yolo County 5.62
6 Contra Costa County 5.52
7 Siskiyou County 5.5
8 Alameda County 5.47
9 San Joaquin County 5.44
10 Trinity County 5.42
11 Del Norte County 5.29
12 San Mateo County 4.85
13 San Diego County 4.68
14 Sutter County 4.67
15 Lake County 4.65
16 San Francisco County 4.6
17 Shasta County 4.58
18 Butte County 4.52
19 Placer County 4.51
20 Alpine County 4.44
21 Santa Clara County 4.24
21 Santa Cruz County 4.24
22 Stanislaus County 4.19
23 Sonoma County 4.06
24 Marin County 4.05
25 Mariposa County 4.04
26 Monterey County 3.93
27 Lassen County 3.9
28 Mendocino County 3.87
29 El Dorado County 3.85
30 Calaveras County 3.84
31 Santa Barbara County 3.77
32 Plumas County 3.74
33 Kings County 3.72
34 Riverside County 3.67
35 San Bernardino County 3.64
35 Tehama County 3.64
36 Modoc County 3.63
37 Orange County 3.62
38 Tuolumne County 3.61
39 Ventura County 3.59
40 San Luis Obispo County 3.57
41 Inyo County 3.54
42 San Benito County 3.53
43 Amador County 3.38
44 Napa County 3.35
45 Mono County 3.24
46 Kern County 3.22
47 Merced County 3.2
48 Fresno County 3.19
49 Los Angeles County 3.17
50 Nevada County 3.11
51 Glenn County 3.06
52 Sierra County 2.9
53 Tulare County 2.61
54 Colusa County 2.59
55 Madera County 2.56
56 Imperial County 1.67