RANKING · 2024 ACS · 58 SHOWN OF 58

Largest foreign-born population, California counties

California counties with the most residents born outside the United States, as of the 2024 American Community Survey. Ranked by number of people, not share. This list covers the 58 counties in California that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDMost residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people Most unmarried men

YEAR2010 2020 2024

RANKPLACESTATEPOPFOREIGN-BORN POPULATIONVS 2010

01Los Angeles County, CACA9,694,9343,279,695−6%

02Orange County, CACA3,149,507961,832+5%

03Santa Clara County, CACA1,914,391789,756+20%

04San Diego County, CACA3,282,248749,735+5%

05Alameda County, CACA1,636,630572,911+23%

06Riverside County, CACA2,544,916543,865+11%

07San Bernardino County, CACA2,224,091474,713+8%

08Sacramento County, CACA1,618,460354,878+27%

09Contra Costa County, CACA1,170,070309,611+25%

10San Francisco County, CACA826,079282,674−1%

11San Mateo County, CACA743,568265,258+9%

12Fresno County, CACA1,035,456203,377+1%

13San Joaquin County, CACA823,815200,943+26%

14Ventura County, CACA830,851186,177−1%

15Kern County, CACA927,068185,151+7%

16Monterey County, CACA433,729129,418+3%

17Stanislaus County, CACA557,719116,294+11%

18Tulare County, CACA485,146106,332+4%

19Santa Barbara County, CACA442,06598,422−2%

20Solano County, CACA455,37693,940+14%

21Sonoma County, CACA486,44481,688+2%

22Merced County, CACA297,26074,255+17%

23Imperial County, CACA181,41156,995+2%

24Placer County, CACA442,08153,126+51%

25Marin County, CACA253,69450,611+6%

26Santa Cruz County, CACA258,85247,705−1%

27Yolo County, CACA224,41046,242+13%

28Madera County, CACA167,92732,391+4%

29Napa County, CACA132,94929,926−3%

30Kings County, CACA154,32729,420−11%

31San Luis Obispo County, CACA282,36727,780+3%

32Sutter County, CACA98,78722,484+6%

33Butte County, CACA209,21117,789+2%

34El Dorado County, CACA192,32317,749+25%

35San Benito County, CACA70,08213,488+15%

36Mendocino County, CACA88,12210,983+8%

37Yuba County, CACA88,6919,718+3%

38Shasta County, CACA181,6489,142+1%

39Humboldt County, CACA131,6478,284+14%

40Tehama County, CACA64,6657,249+6%

41Lake County, CACA67,7726,733+17%

42Nevada County, CACA101,9116,536+20%

43Colusa County, CACA21,8366,053+12%

44Glenn County, CACA28,1415,299+20%

45Calaveras County, CACA46,6052,841+54%

46Siskiyou County, CACA42,0132,539−3%

47Tuolumne County, CACA53,1602,508+15%

48Amador County, CACA41,8762,415+4%

49Lassen County, CACA28,1172,125−15%

50Mono County, CACA12,5051,855−29%

51Del Norte County, CACA26,4101,851−11%

52Inyo County, CACA18,1581,483−22%

53Mariposa County, CACA16,9181,409+106%

54Plumas County, CACA18,583937−18%

55Trinity County, CACA15,720763+78%

56Modoc County, CACA8,426757+18%

57Sierra County, CACA3,098103−39%

58Alpine County, CACA1,04387+47%

SHOWING 1–58 OF 58

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES