RANKING · 2020 CENSUS · 39 SHOWN OF 39

Highest Ecuadorian population share, California counties · 2020

California counties ranked by the share of all residents who are Ecuadorian origin (2023 American Community Survey). A concentration measure: Ecuadorian residents as a percentage of total population. This list covers the 39 counties in California that qualify, ranked against each other statewide.

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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 2000

01Tuolumne County, CACA53,1600.5%–

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

03Marin County, CACA253,6940.2%–

04San Bernardino County, CACA2,224,0910.2%–

05Ventura County, CACA830,8510.2%–

06Orange County, CACA3,149,5070.1%–

07San Mateo County, CACA743,5680.1%–

08San Diego County, CACA3,282,2480.1%–

09San Francisco County, CACA826,0790.1%–

10Riverside County, CACA2,544,9160.1%–

11Plumas County, CACA18,5830.1%–

12Kings County, CACA154,3270.1%–

13San Benito County, CACA70,0820.1%–

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

15Yolo County, CACA224,4100.1%–

16Sonoma County, CACA486,4440.1%–

17Santa Cruz County, CACA258,8520.1%–

18Solano County, CACA455,3760.1%–

19San Joaquin County, CACA823,8150.0%–

20Sacramento County, CACA1,618,4600.0%–

21Santa Barbara County, CACA442,0650.0%–

22San Luis Obispo County, CACA282,3670.0%–

23Fresno County, CACA1,035,4560.0%–

24Santa Clara County, CACA1,914,3910.0%–

25Alameda County, CACA1,636,6300.0%–

26El Dorado County, CACA192,3230.0%–

27Monterey County, CACA433,7290.0%–

28Madera County, CACA167,9270.0%–

29Glenn County, CACA28,1410.0%–

30Humboldt County, CACA131,6470.0%–

31Calaveras County, CACA46,6050.0%–

32Placer County, CACA442,0810.0%–

33Kern County, CACA927,0680.0%–

34Napa County, CACA132,9490.0%–

35Stanislaus County, CACA557,7190.0%–

36Tulare County, CACA485,1460.0%–

37Nevada County, CACA101,9110.0%–

38Merced County, CACA297,2600.0%–

39Mendocino County, CACA88,1220.0%–

SHOWING 1–39 OF 39

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES