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RANKING · 2020 CENSUS · 58 SHOWN OF 58

Highest Mexican population share, California counties · 2020

California counties ranked by the share of all residents who are Mexican origin (2020 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 22.7%.

Mexican Americans: full group profile →
SAME RANKING BYCitiesStatesMetros
Highest Mexican population share by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPMEXICAN SHAREVS 2010
01Imperial County, CACA181,41181.4%+4.5 pts
02Tulare County, CACA485,14662.1%+5.1 pts
03Merced County, CACA297,26057.4%+7.0 pts
04Colusa County, CACA21,83657.2%+9.3 pts
05Madera County, CACA167,92755.4%+6.3 pts
06San Benito County, CACA70,08254.9%+3.9 pts
07Monterey County, CACA433,72954.5%+4.8 pts
08Kings County, CACA154,32751.7%+5.2 pts
09Fresno County, CACA1,035,45649.3%+3.2 pts
10Kern County, CACA927,06849.1%+5.6 pts
11San Bernardino County, CACA2,224,09145.6%+4.2 pts
12Riverside County, CACA2,544,91643.5%+4.3 pts
13Stanislaus County, CACA557,71943.2%+5.8 pts
14Santa Barbara County, CACA442,06541.3%+3.8 pts
15Glenn County, CACA28,14139.3%+6.0 pts
16Ventura County, CACA830,85138.0%+2.9 pts
17San Joaquin County, CACA823,81537.2%+3.8 pts
18Los Angeles County, CACA9,694,93436.3%+0.1 pts
19Santa Cruz County, CACA258,85229.8%+1.7 pts
20San Diego County, CACA3,282,24829.7%+1.8 pts
21Napa County, CACA132,94929.2%+2.0 pts
22Sutter County, CACA98,78728.8%+3.3 pts
23Orange County, CACA3,149,50728.7%+0.2 pts
24Yolo County, CACA224,41027.1%+2.1 pts
25Mono County, CACA12,50526.0%+6.0 pts
26Yuba County, CACA88,69124.6%+3.1 pts
27Tehama County, CACA64,66523.8%+5.4 pts
28Mendocino County, CACA88,12223.8%+4.6 pts
29Sonoma County, CACA486,44422.7%+1.9 pts
30Solano County, CACA455,37620.6%+2.2 pts
31Santa Clara County, CACA1,914,39120.4%−1.7 pts
32San Luis Obispo County, CACA282,36719.6%+2.8 pts
33Inyo County, CACA18,15819.5%+3.6 pts
34Sacramento County, CACA1,618,46019.2%+2.0 pts
35Lake County, CACA67,77218.8%+5.1 pts
36Lassen County, CACA28,11718.0%+3.9 pts
37Contra Costa County, CACA1,170,07017.1%+0.3 pts
38Alameda County, CACA1,636,63016.2%−0.4 pts
39Butte County, CACA209,21114.3%+3.0 pts
40San Mateo County, CACA743,56814.2%−1.8 pts
41Del Norte County, CACA26,41013.7%−1.6 pts
42Modoc County, CACA8,42613.1%+1.4 pts
43Siskiyou County, CACA42,01310.9%+2.5 pts
44Amador County, CACA41,87610.1%+0.8 pts
45Placer County, CACA442,08110.0%+0.7 pts
46El Dorado County, CACA192,32310.0%+1.0 pts
47Mariposa County, CACA16,9189.8%+2.2 pts
48Alpine County, CACA1,0439.7%+7.9 pts
49Calaveras County, CACA46,6059.3%+0.8 pts
50Humboldt County, CACA131,6479.2%+1.5 pts
51Shasta County, CACA181,6487.9%+2.0 pts
52Nevada County, CACA101,9117.9%+1.6 pts
53San Francisco County, CACA826,0797.7%−0.1 pts
54Tuolumne County, CACA53,1607.5%−1.0 pts
55Plumas County, CACA18,5837.1%+0.1 pts
56Marin County, CACA253,6947.0%−0.5 pts
57Sierra County, CACA3,0987.0%+0.8 pts
58Trinity County, CACA15,7205.2%+0.1 pts
SHOWING 1–58 OF 58

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