Ranking of California Counties By Percentage of Population that were Immigrants or Foreign-Born in 2021 (ACS-5Yrs)
Updated on September 27, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among all California counties, Santa Clara had the highest percentage of its population being immigrants or foreign-born (39.94%), followed by San Mateo (35.11%), and San Francisco (34.11%).
The chart below shows the top 10 counties, and the table below shows the ranking of all California counties.
You can see similar information for other states. You can also see the ranking for all counties in the United States.
You may also be interested in:
Related Topics: California ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates, 2021 Census.
Ranking of California Counties By Percentage of Population that were Immigrants or Foreign-Born in 2021
Items per page:
0 of 0
| Rank | County | Perc. of County Population (%) |
|---|---|---|
| 1 | Santa Clara | 39.94 |
| 2 | San Mateo | 35.11 |
| 3 | San Francisco | 34.11 |
| 4 | Los Angeles | 33.47 |
| 5 | Alameda | 32.94 |
| 6 | Imperial | 29.93 |
| 7 | Orange | 29.45 |
| 8 | Monterey | 29.04 |
| 9 | Colusa | 26.69 |
| 10 | Merced | 26.02 |
| 11 | Contra Costa | 24.96 |
| 12 | San Joaquin | 23.32 |
| 13 | San Diego | 22.73 |
| 14 | Santa Barbara | 22.40 |
| 15 | Yolo | 22.35 |
| 16 | Sutter | 21.83 |
| 17 | Tulare | 21.67 |
| 18 | Riverside | 21.54 |
| 19 | Napa | 21.49 |
| 20 | Ventura | 21.11 |
| 21 | Sacramento | 21.03 |
| 22 | San Bernardino | 20.66 |
| 23 | Stanislaus | 20.14 |
| 24 | San Benito | 19.98 |
| 25 | Madera | 19.94 |
| 26 | Fresno | 19.92 |
| 27 | Solano | 19.72 |
| 28 | Kern | 19.65 |
| 29 | Kings | 19.12 |
| 30 | Marin | 18.50 |
| 31 | Santa Cruz | 17.83 |
| 32 | Mono | 16.82 |
| 33 | Sonoma | 16.33 |
| 34 | Glenn | 16.05 |
| 35 | Yuba | 12.75 |
| 36 | Mendocino | 12.34 |
| 37 | Placer | 11.73 |
| 38 | San Luis Obispo | 9.67 |
| 39 | El Dorado | 9.27 |
| 40 | Lake | 8.93 |
| 41 | Tehama | 8.51 |
| 42 | Del Norte | 8.19 |
| 43 | Trinity | 7.76 |
| 44 | Butte | 7.61 |
| 45 | Modoc | 7.19 |
| 46 | Inyo | 7.05 |
| 47 | Amador | 6.25 |
| 48 | Nevada | 6.11 |
| 49 | Humboldt | 6.08 |
| 50 | Siskiyou | 5.83 |
| 51 | Mariposa | 5.57 |
| 52 | Shasta | 5.56 |
| 53 | Lassen | 5.39 |
| 54 | Tuolumne | 5.28 |
| 55 | Alpine | 4.76 |
| 56 | Calaveras | 4.75 |
| 57 | Plumas | 3.65 |
| 58 | Sierra | 3.28 |