RANKING · 2020 CENSUS · 39 SHOWN OF 39

Largest Ecuadorian population, California counties · 2020

California counties ranked by the number of residents who are Ecuadorian origin, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 39 counties in California that qualify, ranked against each other statewide. The median across all 39 is 178.

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

Largest Ecuadorian population by state

RANKPLACESTATEPOPECUADORIAN POPULATIONVS 2010

01Los Angeles County, CACA9,694,93420,084+2%

02San Bernardino County, CACA2,224,0914,225+53%

03Orange County, CACA3,149,5073,565+15%

04San Diego County, CACA3,282,2483,063+64%

05Riverside County, CACA2,544,9162,003+4%

06Ventura County, CACA830,8511,309+56%

07San Mateo County, CACA743,568801+15%

08San Francisco County, CACA826,079797+67%

09Santa Clara County, CACA1,914,391748+2%

10Sacramento County, CACA1,618,460745+30%

11Contra Costa County, CACA1,170,070711+21%

12Alameda County, CACA1,636,630609+2%

13Marin County, CACA253,694516+121%

14Fresno County, CACA1,035,456401+9%

15San Joaquin County, CACA823,815367+63%

16Sonoma County, CACA486,444281+110%

17Tuolumne County, CACA53,160281–

18Solano County, CACA455,376239+74%

19Santa Barbara County, CACA442,065203+26%

20Kern County, CACA927,068178−70%

21Santa Cruz County, CACA258,852149+137%

22Monterey County, CACA433,729130+16%

23Yolo County, CACA224,410130+7%

24San Luis Obispo County, CACA282,367117−14%

25Kings County, CACA154,327102+467%

26Placer County, CACA442,08187+1143%

27Stanislaus County, CACA557,71971+8%

28El Dorado County, CACA192,32361−5%

29Tulare County, CACA485,14657–

30Madera County, CACA167,92745+18%

31San Benito County, CACA70,08241–

32Humboldt County, CACA131,64734+89%

33Merced County, CACA297,26030–

34Napa County, CACA132,94921+62%

35Plumas County, CACA18,58315−12%

36Calaveras County, CACA46,60511–

37Nevada County, CACA101,91111–

38Glenn County, CACA28,1418+14%

39Mendocino County, CACA88,1225−50%

SHOWING 1–39 OF 39

Download CSV (full list, 39 rows)

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