RANKING · 2020 CENSUS · 55 SHOWN OF 55

Highest South American population share, California counties · 2020

California counties ranked by the share of all residents who are South American origin (2020 American Community Survey). A concentration measure: South American residents as a percentage of total population. This list covers the 55 counties in California that qualify, ranked against each other statewide. The median across all 55 is 0.4%.

South Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest Mexican population Highest Mexican population share Largest Puerto Rican population Highest Puerto Rican population share Largest Cuban population Highest Cuban population share

YEAR2010 2020 2024

RANKPLACESTATEPOPSOUTH AMERICAN SHAREVS 2010

01Alpine County, CACA1,0435.3%–

02San Mateo County, CACA743,5681.6%+0.3 pts

03Tuolumne County, CACA53,1601.4%+1.3 pts

04Marin County, CACA253,6941.4%+0.4 pts

05Contra Costa County, CACA1,170,0701.4%+0.3 pts

06Los Angeles County, CACA9,694,9341.3%+0.1 pts

07San Francisco County, CACA826,0791.3%+0.3 pts

08Orange County, CACA3,149,5071.2%+0.2 pts

09Yolo County, CACA224,4101.1%+0.4 pts

10Santa Clara County, CACA1,914,3911.0%+0.2 pts

11Ventura County, CACA830,8511.0%+0.2 pts

12San Bernardino County, CACA2,224,0911.0%+0.1 pts

13Riverside County, CACA2,544,9160.9%+0.3 pts

14Santa Barbara County, CACA442,0650.9%+0.4 pts

15Alameda County, CACA1,636,6300.9%+0.2 pts

16San Diego County, CACA3,282,2480.8%+0.3 pts

17Placer County, CACA442,0810.8%+0.6 pts

18Solano County, CACA455,3760.7%+0.3 pts

19San Benito County, CACA70,0820.6%+0.1 pts

20Monterey County, CACA433,7290.6%+0.2 pts

21Santa Cruz County, CACA258,8520.6%+0.1 pts

22Sonoma County, CACA486,4440.6%+0.3 pts

23Napa County, CACA132,9490.5%0.0 pts

24Sacramento County, CACA1,618,4600.5%+0.1 pts

25Humboldt County, CACA131,6470.5%+0.3 pts

26Mendocino County, CACA88,1220.4%+0.4 pts

27El Dorado County, CACA192,3230.4%0.0 pts

28San Luis Obispo County, CACA282,3670.4%0.0 pts

29Imperial County, CACA181,4110.4%+0.3 pts

30San Joaquin County, CACA823,8150.4%0.0 pts

31Kern County, CACA927,0680.3%0.0 pts

32Stanislaus County, CACA557,7190.3%0.0 pts

33Siskiyou County, CACA42,0130.3%+0.2 pts

34Yuba County, CACA88,6910.3%+0.2 pts

35Shasta County, CACA181,6480.3%+0.1 pts

36Merced County, CACA297,2600.3%0.0 pts

37Inyo County, CACA18,1580.3%+0.1 pts

38Fresno County, CACA1,035,4560.3%0.0 pts

39Amador County, CACA41,8760.3%+0.2 pts

40Nevada County, CACA101,9110.2%+0.2 pts

41Tulare County, CACA485,1460.2%+0.1 pts

42Del Norte County, CACA26,4100.2%+0.2 pts

43Kings County, CACA154,3270.2%+0.1 pts

44Lake County, CACA67,7720.2%0.0 pts

45Plumas County, CACA18,5830.2%+0.1 pts

46Modoc County, CACA8,4260.2%–

47Madera County, CACA167,9270.2%+0.1 pts

48Butte County, CACA209,2110.2%−0.1 pts

49Mariposa County, CACA16,9180.2%−0.1 pts

50Calaveras County, CACA46,6050.1%+0.1 pts

51Sutter County, CACA98,7870.1%−0.1 pts

52Tehama County, CACA64,6650.1%–

53Glenn County, CACA28,1410.0%−0.4 pts

54Colusa County, CACA21,8360.0%−0.1 pts

55Mono County, CACA12,5050.0%–

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS