RANKING · 2010 CENSUS · 40 SHOWN OF 40

Highest Ecuadorian population share, California counties · 2010

California counties ranked by the share of all residents who are Ecuadorian origin (2010 American Community Survey). A concentration measure: Ecuadorian residents as a percentage of total population. This list covers the 40 counties in California that qualify, ranked against each other statewide.

Ecuadorian Americans: full group profile →

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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

Highest Ecuadorian population share by state

RANKPLACESTATEPOPECUADORIAN SHAREVS –

01Mariposa County, CACA16,9180.3%–

02Los Angeles County, CACA9,694,9340.2%–

03San Bernardino County, CACA2,224,0910.1%–

04Orange County, CACA3,149,5070.1%–

05Ventura County, CACA830,8510.1%–

06San Mateo County, CACA743,5680.1%–

07Marin County, CACA253,6940.1%–

08Riverside County, CACA2,544,9160.1%–

09Plumas County, CACA18,5830.1%–

10Kern County, CACA927,0680.1%–

11Yolo County, CACA224,4100.1%–

12San Diego County, CACA3,282,2480.1%–

13San Francisco County, CACA826,0790.1%–

14Contra Costa County, CACA1,170,0700.1%–

15San Luis Obispo County, CACA282,3670.1%–

16Del Norte County, CACA26,4100.0%–

17Lassen County, CACA28,1170.0%–

18Santa Clara County, CACA1,914,3910.0%–

19Sacramento County, CACA1,618,4600.0%–

20Fresno County, CACA1,035,4560.0%–

21Alameda County, CACA1,636,6300.0%–

22Santa Barbara County, CACA442,0650.0%–

23El Dorado County, CACA192,3230.0%–

24Solano County, CACA455,3760.0%–

25San Joaquin County, CACA823,8150.0%–

26Sonoma County, CACA486,4440.0%–

27Monterey County, CACA433,7290.0%–

28Madera County, CACA167,9270.0%–

29Glenn County, CACA28,1410.0%–

30Santa Cruz County, CACA258,8520.0%–

31Amador County, CACA41,8760.0%–

32Humboldt County, CACA131,6470.0%–

33Stanislaus County, CACA557,7190.0%–

34Sutter County, CACA98,7870.0%–

35Kings County, CACA154,3270.0%–

36Mendocino County, CACA88,1220.0%–

37Imperial County, CACA181,4110.0%–

38Napa County, CACA132,9490.0%–

39Shasta County, CACA181,6480.0%–

40Placer County, CACA442,0810.0%–

SHOWING 1–40 OF 40

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS