RANKING · 2020 CENSUS · 58 SHOWN OF 58

Largest Mexican population, California counties · 2020

California counties ranked by the number of residents who are Mexican origin, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 58 counties in California that qualify, ranked against each other statewide.

Mexican Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDHighest Mexican population share Largest Puerto Rican population Highest Puerto Rican population share Largest Cuban population Highest Cuban population share Largest Dominican population

YEAR2010 2020 2024

RANKPLACESTATEPOPMEXICAN POPULATIONVS 2010

01Los Angeles County, CACA9,694,9343,649,149+3%

02Riverside County, CACA2,544,9161,059,318+28%

03San Diego County, CACA3,282,248988,825+17%

04San Bernardino County, CACA2,224,091986,908+19%

05Orange County, CACA3,149,507909,158+8%

06Fresno County, CACA1,035,456487,946+16%

07Kern County, CACA927,068438,317+24%

08Santa Clara County, CACA1,914,391392,853+2%

09Ventura County, CACA830,851320,972+13%

10Sacramento County, CACA1,618,460294,693+23%

11Tulare County, CACA485,146288,097+18%

12San Joaquin County, CACA823,815279,808+24%

13Alameda County, CACA1,636,630268,602+10%

14Monterey County, CACA433,729236,033+17%

15Stanislaus County, CACA557,719235,992+24%

16Contra Costa County, CACA1,170,070195,933+14%

17Santa Barbara County, CACA442,065183,845+18%

18Merced County, CACA297,260157,081+24%

19Imperial County, CACA181,411147,026+14%

20Sonoma County, CACA486,444112,740+14%

21San Mateo County, CACA743,568108,508−4%

22Solano County, CACA455,37691,484+21%

23Madera County, CACA167,92786,320+19%

24Santa Cruz County, CACA258,85281,536+13%

25Kings County, CACA154,32778,051+11%

26San Francisco County, CACA826,07967,174+9%

27Yolo County, CACA224,41059,367+21%

28San Luis Obispo County, CACA282,36755,483+24%

29Napa County, CACA132,94940,433+11%

30Placer County, CACA442,08139,212+26%

31San Benito County, CACA70,08233,766+22%

32Butte County, CACA209,21131,967+29%

33Sutter County, CACA98,78727,699+17%

34Mendocino County, CACA88,12220,694+24%

35Yuba County, CACA88,69119,048+24%

36El Dorado County, CACA192,32318,982+18%

37Marin County, CACA253,69418,131−3%

38Tehama County, CACA64,66515,298+33%

39Shasta County, CACA181,64814,236+35%

40Humboldt County, CACA131,64712,537+23%

41Colusa County, CACA21,83612,302+21%

42Lake County, CACA67,77212,110+37%

43Glenn County, CACA28,14111,025+19%

44Nevada County, CACA101,9117,884+27%

45Lassen County, CACA28,1175,494+12%

46Siskiyou County, CACA42,0134,747+26%

47Calaveras County, CACA46,6054,251+9%

48Tuolumne County, CACA53,1604,074−15%

49Amador County, CACA41,8763,953+11%

50Del Norte County, CACA26,4103,799−13%

51Mono County, CACA12,5053,746+34%

52Inyo County, CACA18,1583,492+19%

53Mariposa County, CACA16,9181,690+23%

54Plumas County, CACA18,5831,334−6%

55Modoc County, CACA8,4261,164+3%

56Trinity County, CACA15,720657−7%

57Sierra County, CACA3,098202−2%

58Alpine County, CACA1,043112+433%

SHOWING 1–58 OF 58

Download CSV (full list, 58 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS