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 (2023 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.

CaliforniaAll states All rankings

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 2000

01Alpine County, CACA1,0435.3%–

02San Mateo County, CACA743,5681.6%–

03Tuolumne County, CACA53,1601.4%–

04Marin County, CACA253,6941.4%–

05Contra Costa County, CACA1,170,0701.4%–

06Los Angeles County, CACA9,694,9341.3%–

07San Francisco County, CACA826,0791.3%–

08Orange County, CACA3,149,5071.2%–

09Yolo County, CACA224,4101.1%–

10Santa Clara County, CACA1,914,3911.0%–

11Ventura County, CACA830,8511.0%–

12San Bernardino County, CACA2,224,0911.0%–

13Riverside County, CACA2,544,9160.9%–

14Santa Barbara County, CACA442,0650.9%–

15Alameda County, CACA1,636,6300.9%–

16San Diego County, CACA3,282,2480.8%–

17Placer County, CACA442,0810.8%–

18Solano County, CACA455,3760.7%–

19San Benito County, CACA70,0820.6%–

20Monterey County, CACA433,7290.6%–

21Santa Cruz County, CACA258,8520.6%–

22Sonoma County, CACA486,4440.6%–

23Napa County, CACA132,9490.5%–

24Sacramento County, CACA1,618,4600.5%–

25Humboldt County, CACA131,6470.5%–

26Mendocino County, CACA88,1220.4%–

27El Dorado County, CACA192,3230.4%–

28San Luis Obispo County, CACA282,3670.4%–

29Imperial County, CACA181,4110.4%–

30San Joaquin County, CACA823,8150.4%–

31Kern County, CACA927,0680.3%–

32Stanislaus County, CACA557,7190.3%–

33Siskiyou County, CACA42,0130.3%–

34Yuba County, CACA88,6910.3%–

35Shasta County, CACA181,6480.3%–

36Merced County, CACA297,2600.3%–

37Inyo County, CACA18,1580.3%–

38Fresno County, CACA1,035,4560.3%–

39Amador County, CACA41,8760.3%–

40Nevada County, CACA101,9110.2%–

41Tulare County, CACA485,1460.2%–

42Del Norte County, CACA26,4100.2%–

43Kings County, CACA154,3270.2%–

44Lake County, CACA67,7720.2%–

45Plumas County, CACA18,5830.2%–

46Modoc County, CACA8,4260.2%–

47Madera County, CACA167,9270.2%–

48Butte County, CACA209,2110.2%–

49Mariposa County, CACA16,9180.2%–

50Calaveras County, CACA46,6050.1%–

51Sutter County, CACA98,7870.1%–

52Tehama County, CACA64,6650.1%–

53Glenn County, CACA28,1410.0%–

54Colusa County, CACA21,8360.0%–

55Mono County, CACA12,5050.0%–

SHOWING 1–55 OF 55

Download CSV (full list, 55 rows)

UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES