RANKING · 2024 ACS · 41 SHOWN OF 41

Largest Ecuadorian population, California counties

California counties ranked by the number of residents who are Ecuadorian origin, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 41 counties in California that qualify, ranked against each other statewide.

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, CACA9,694,93423,992+22%

02Orange County, CACA3,149,5075,506+78%

03San Bernardino County, CACA2,224,0914,225+53%

04San Diego County, CACA3,282,2483,212+72%

05Riverside County, CACA2,544,9162,834+47%

06Contra Costa County, CACA1,170,0701,323+125%

07Santa Clara County, CACA1,914,3911,176+61%

08Ventura County, CACA830,8511,083+29%

09Alameda County, CACA1,636,6301,062+78%

10Marin County, CACA253,694808+245%

11San Francisco County, CACA826,079700+46%

12Sacramento County, CACA1,618,460681+19%

13San Mateo County, CACA743,568522−25%

14Kern County, CACA927,068466−23%

15Placer County, CACA442,081406+5700%

16Fresno County, CACA1,035,456368−0%

17Sonoma County, CACA486,444289+116%

18Stanislaus County, CACA557,719246+273%

19Monterey County, CACA433,729230+105%

20Santa Barbara County, CACA442,065226+40%

21Tehama County, CACA64,665163–

22San Luis Obispo County, CACA282,367146+7%

23Tuolumne County, CACA53,160138–

24Santa Cruz County, CACA258,852120+90%

25San Joaquin County, CACA823,815116−48%

26Yolo County, CACA224,410105−14%

27Napa County, CACA132,949102+685%

28Humboldt County, CACA131,64792+411%

29Solano County, CACA455,37691−34%

30Butte County, CACA209,21174–

31Shasta County, CACA181,64864+540%

32Tulare County, CACA485,14662–

33Kings County, CACA154,32746+156%

34San Benito County, CACA70,08237–

35Merced County, CACA297,26034–

36Plumas County, CACA18,58328+65%

37Madera County, CACA167,92719−50%

38Modoc County, CACA8,4269–

39El Dorado County, CACA192,3237−89%

40Imperial County, CACA181,4116−67%

41Mariposa County, CACA16,9182−96%

SHOWING 1–41 OF 41

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES