RANKING · 2024 ACS · 41 SHOWN OF 41

Highest Ecuadorian population share, California counties

California counties ranked by the share of all residents who are Ecuadorian origin (2024 American Community Survey). A concentration measure: Ecuadorian residents as a percentage of total population. This list covers the 41 counties in California that qualify, ranked against each other statewide. The median across all 41 is 0.1%. Biggest climber in the top 100 since 2020: Placer County, CA, up 19 places to #13.

Ecuadorian Americans: full group profile →

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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

Highest Ecuadorian population share by state

RANKPLACESTATEPOPECUADORIAN SHAREVS 2010

01▲2Marin County, CACA253,6940.3%+0.2 pts

02▼1Tuolumne County, CACA53,1600.3%–

03Tehama County, CACA64,6650.3%–

04▼2Los Angeles County, CACA9,694,9340.2%0.0 pts

05▼1San Bernardino County, CACA2,224,0910.2%+0.1 pts

06Orange County, CACA3,149,5070.2%+0.1 pts

07▲4Plumas County, CACA18,5830.1%+0.1 pts

08▼3Ventura County, CACA830,8510.1%0.0 pts

09▲1Riverside County, CACA2,544,9160.1%0.0 pts

10▲4Contra Costa County, CACA1,170,0700.1%+0.1 pts

11Modoc County, CACA8,4260.1%–

12▼4San Diego County, CACA3,282,2480.1%0.0 pts

13▲19Placer County, CACA442,0810.1%+0.1 pts

14▼5San Francisco County, CACA826,0790.1%0.0 pts

15▲19Napa County, CACA132,9490.1%+0.1 pts

16▼9San Mateo County, CACA743,5680.1%0.0 pts

17▲13Humboldt County, CACA131,6470.1%+0.1 pts

18▲7Alameda County, CACA1,636,6300.1%0.0 pts

19▲5Santa Clara County, CACA1,914,3910.1%0.0 pts

20▼4Sonoma County, CACA486,4440.1%0.0 pts

21▼8San Benito County, CACA70,0820.1%–

22▲5Monterey County, CACA433,7290.1%0.0 pts

23▼1San Luis Obispo County, CACA282,3670.1%0.0 pts

24▼3Santa Barbara County, CACA442,0650.1%0.0 pts

25▲8Kern County, CACA927,0680.1%0.0 pts

26▼11Yolo County, CACA224,4100.0%0.0 pts

27▼10Santa Cruz County, CACA258,8520.0%0.0 pts

28▲7Stanislaus County, CACA557,7190.0%0.0 pts

29▼9Sacramento County, CACA1,618,4600.0%0.0 pts

30▼7Fresno County, CACA1,035,4560.0%0.0 pts

31Butte County, CACA209,2110.0%–

32Shasta County, CACA181,6480.0%0.0 pts

33▼21Kings County, CACA154,3270.0%0.0 pts

34▼16Solano County, CACA455,3760.0%0.0 pts

35▼16San Joaquin County, CACA823,8150.0%0.0 pts

36Tulare County, CACA485,1460.0%–

37▼9Madera County, CACA167,9270.0%0.0 pts

38Merced County, CACA297,2600.0%–

39Mariposa County, CACA16,9180.0%−0.3 pts

40▼14El Dorado County, CACA192,3230.0%0.0 pts

41Imperial County, CACA181,4110.0%0.0 pts

SHOWING 1–41 OF 41

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