| Rank |
County |
Percentage of Foreign Born Residents |
| 1 |
Santa Clara County, California
|
36.9%
|
| 2 |
Los Angeles County, California
|
35.6%
|
| 3 |
San Francisco County, California
|
35.6%
|
| 4 |
San Mateo County, California
|
34.1%
|
| 5 |
Imperial County, California
|
32.0%
|
| 6 |
Alameda County, California
|
30.7%
|
| 7 |
Orange County, California
|
30.5%
|
| 8 |
Monterey County, California
|
30.3%
|
| 9 |
Merced County, California
|
25.0%
|
| 10 |
Colusa County, California
|
24.2%
|
| 11 |
Contra Costa County, California
|
23.6%
|
| 12 |
Santa Barbara County, California
|
23.5%
|
| 13 |
San Diego County, California
|
23.2%
|
| 14 |
Tulare County, California
|
23.1%
|
| 15 |
San Joaquin County, California
|
23.1%
|
| 16 |
Ventura County, California
|
22.8%
|
| 17 |
Sutter County, California
|
22.5%
|
| 18 |
Riverside County, California
|
22.2%
|
| 19 |
Napa County, California
|
22.1%
|
| 20 |
Fresno County, California
|
22.1%
|
| 21 |
San Bernardino County, California
|
21.4%
|
| 22 |
Madera County, California
|
21.3%
|
| 23 |
San Benito County, California
|
21.2%
|
| 24 |
Yolo County, California
|
21.2%
|
| 25 |
Kings County, California
|
21.1%
|
| 26 |
Kern County, California
|
20.5%
|
| 27 |
Stanislaus County, California
|
20.5%
|
| 28 |
Solano County, California
|
20.0%
|
| 29 |
Sacramento County, California
|
19.6%
|
| 30 |
Santa Cruz County, California
|
18.6%
|
| 31 |
Marin County, California
|
18.5%
|
| 32 |
Mono County, California
|
18.0%
|
| 33 |
Sonoma County, California
|
16.4%
|
| 34 |
Glenn County, California
|
15.6%
|
| 35 |
Mendocino County, California
|
11.8%
|
| 36 |
Yuba County, California
|
11.7%
|
| 37 |
Tehama County, California
|
10.6%
|
| 38 |
San Luis Obispo County, California
|
10.5%
|
| 39 |
Placer County, California
|
10.3%
|
| 40 |
Inyo County, California
|
9.8%
|
| 41 |
Lake County, California
|
8.5%
|
| 42 |
El Dorado County, California
|
8.4%
|
| 43 |
Butte County, California
|
7.9%
|
| 44 |
Lassen County, California
|
7.0%
|
| 45 |
Del Norte County, California
|
6.7%
|
| 46 |
Modoc County, California
|
6.7%
|
| 47 |
Plumas County, California
|
6.2%
|
| 48 |
Amador County, California
|
5.8%
|
| 49 |
Sierra County, California
|
5.7%
|
| 50 |
Siskiyou County, California
|
5.7%
|
| 51 |
Humboldt County, California
|
5.6%
|
| 52 |
Nevada County, California
|
5.4%
|
| 53 |
Shasta County, California
|
5.4%
|
| 54 |
Mariposa County, California
|
4.8%
|
| 55 |
Alpine County, California
|
4.6%
|
| 56 |
Tuolumne County, California
|
4.4%
|
| 57 |
Calaveras County, California
|
4.3%
|
| 58 |
Trinity County, California
|
3.8%
|