RANKING · 2024 ACS · 58 SHOWN OF 58

Highest Mexican population share, California counties

California counties ranked by the share of all residents who are Mexican origin (2024 American Community Survey). A concentration measure: Mexican residents as a percentage of total population. This list covers the 58 counties in California that qualify, ranked against each other statewide. The median across all 58 is 24.3%. Biggest climber in the top 100 since 2020: Sierra County, CA, up 7 places to #50.

Mexican Americans: full group profile →

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SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPMEXICAN SHAREVS 2010

01Imperial County, CACA181,41182.9%+5.9 pts

02Tulare County, CACA485,14662.1%+5.1 pts

03▲1Colusa County, CACA21,83660.5%+12.6 pts

04▼1Merced County, CACA297,26060.5%+10.1 pts

05Madera County, CACA167,92757.5%+8.4 pts

06San Benito County, CACA70,08256.4%+5.4 pts

07Monterey County, CACA433,72956.3%+6.6 pts

08Kings County, CACA154,32754.3%+7.9 pts

09▲1Kern County, CACA927,06850.4%+6.9 pts

10▼1Fresno County, CACA1,035,45650.1%+3.9 pts

11San Bernardino County, CACA2,224,09146.8%+5.4 pts

12▲1Stanislaus County, CACA557,71946.0%+8.5 pts

13▼1Riverside County, CACA2,544,91644.0%+4.8 pts

14▲1Glenn County, CACA28,14143.4%+10.1 pts

15▼1Santa Barbara County, CACA442,06543.1%+5.6 pts

16Ventura County, CACA830,85138.5%+3.4 pts

17San Joaquin County, CACA823,81537.2%+3.8 pts

18Los Angeles County, CACA9,694,93435.3%−1.0 pts

19▲2Napa County, CACA132,94930.5%+3.3 pts

20▼1Santa Cruz County, CACA258,85230.4%+2.2 pts

21▼1San Diego County, CACA3,282,24829.7%+1.8 pts

22Sutter County, CACA98,78728.7%+3.3 pts

23▲1Yolo County, CACA224,41028.7%+3.6 pts

24▼1Orange County, CACA3,149,50728.3%−0.2 pts

25▲1Yuba County, CACA88,69125.8%+4.3 pts

26▲1Tehama County, CACA64,66525.1%+6.7 pts

27▲1Mendocino County, CACA88,12224.5%+5.3 pts

28▼3Mono County, CACA12,50524.3%+4.2 pts

29Sonoma County, CACA486,44424.3%+3.5 pts

30Solano County, CACA455,37622.2%+3.8 pts

31▲1San Luis Obispo County, CACA282,36721.0%+4.1 pts

32▲3Lake County, CACA67,77220.9%+7.2 pts

33▼2Santa Clara County, CACA1,914,39119.9%−2.3 pts

34Sacramento County, CACA1,618,46019.3%+2.2 pts

35▼2Inyo County, CACA18,15818.6%+2.7 pts

36▲1Contra Costa County, CACA1,170,07018.1%+1.3 pts

37▼1Lassen County, CACA28,11717.0%+3.0 pts

38▲1Butte County, CACA209,21117.0%+5.7 pts

39▼1Alameda County, CACA1,636,63016.2%−0.4 pts

40▲1Del Norte County, CACA26,41015.5%+0.2 pts

41▼1San Mateo County, CACA743,56814.4%−1.6 pts

42Modoc County, CACA8,42613.0%+1.2 pts

43▲1Amador County, CACA41,87611.1%+1.8 pts

44▲6Humboldt County, CACA131,64711.0%+3.4 pts

45Placer County, CACA442,08110.9%+1.6 pts

46▲3Calaveras County, CACA46,60510.9%+2.4 pts

47Mariposa County, CACA16,91810.8%+3.3 pts

48▼5Siskiyou County, CACA42,01310.6%+2.2 pts

49▼3El Dorado County, CACA192,32310.5%+1.6 pts

50▲7Sierra County, CACA3,09810.3%+4.2 pts

51▼3Alpine County, CACA1,0439.2%+7.4 pts

52▼1Shasta County, CACA181,6488.8%+2.9 pts

53▲1Tuolumne County, CACA53,1608.0%−0.5 pts

54▼1San Francisco County, CACA826,0797.9%+0.1 pts

55▲1Marin County, CACA253,6947.9%+0.3 pts

56▼4Nevada County, CACA101,9117.0%+0.7 pts

57▼2Plumas County, CACA18,5836.6%−0.4 pts

58Trinity County, CACA15,7203.7%−1.4 pts

SHOWING 1–58 OF 58

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES