California Net International Migration By County in 2021

Updated on June 21, 2025.

According to the US Census Bureau estimates, in 2021, the net international migration for California was 44,127. Los Angeles County had the highest net international migration (12,107) followed by Santa Clara County (6,704), and Alameda County (4,235). On the other hand, Madera County had the lowest net international migration (-26), followed by San Benito County (-12), and Tehama County (-11).

Net International migration for a given county refers to the difference between the number of people moving to the county from other parts of the world outside the borders of the United States (50 states and District of Columbia) and the number of people moving out of the county to other parts of the world outside the borders of the United States.

You can also see similar information for other states and also by state for the United States.

Hover over or click on the chart to see this information for each county. The data can also be filtered, sorted, and explored further in a table below.

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California Net International Migration By County in 2021
California Net International Migration By County in 2021
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County Net International Migration
Alameda 4235
Alpine 0
Amador 8
Butte 64
Calaveras 8
Colusa 6
Contra Costa 1676
Del Norte 11
El Dorado 86
Fresno 560
Glenn 10
Humboldt 40
Imperial 54
Inyo 2
Kern 320
Kings 2
Lake 14
Lassen 4
Los Angeles 12107
Madera -26
Marin 388
Mariposa 5
Mendocino 47
Merced 116
Modoc 3
Mono 19
Monterey 251
Napa 41
Nevada 2
Orange 3837
Placer 218
Plumas 2
Riverside 643
Sacramento 2427
San Benito -12
San Bernardino 605
San Diego 2717
San Francisco 2040
San Joaquin 677
San Luis Obispo 77
San Mateo 1715
Santa Barbara 439
Santa Clara 6704
Santa Cruz 94
Shasta 95
Sierra 0
Siskiyou 7
Solano 318
Sonoma 228
Stanislaus 321
Sutter 91
Tehama -11
Trinity -2
Tulare 45
Tuolumne 7
Ventura 258
Yolo 512
Yuba 22