RANKING · 2010 CENSUS · 47 SHOWN OF 47

Largest Romanian population, California counties · 2010

California counties ranked by the number of residents who are Romanian ancestry, from the 2010 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 47 counties in California that qualify, ranked against each other statewide. The median across all 47 is 339.

Romanian Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPROMANIAN POPULATIONVS –

01Los Angeles County, CACA9,694,93418,616–

02Orange County, CACA3,149,5079,485–

03Sacramento County, CACA1,618,4606,240–

04Riverside County, CACA2,544,9164,720–

05San Diego County, CACA3,282,2484,090–

06Santa Clara County, CACA1,914,3913,300–

07San Bernardino County, CACA2,224,0912,441–

08Alameda County, CACA1,636,6302,328–

09San Francisco County, CACA826,0791,943–

10Ventura County, CACA830,8511,722–

11Contra Costa County, CACA1,170,0701,517–

12Marin County, CACA253,6941,321–

13San Mateo County, CACA743,568985–

14Stanislaus County, CACA557,719962–

15Placer County, CACA442,081860–

16Yuba County, CACA88,691809–

17Santa Cruz County, CACA258,852577–

18Sonoma County, CACA486,444577–

19Fresno County, CACA1,035,456530–

20Santa Barbara County, CACA442,065500–

21San Joaquin County, CACA823,815427–

22Yolo County, CACA224,410391–

23Kern County, CACA927,068344–

24Butte County, CACA209,211339–

25San Luis Obispo County, CACA282,367326–

26El Dorado County, CACA192,323325–

27Monterey County, CACA433,729292–

28Solano County, CACA455,376241–

29Nevada County, CACA101,911167–

30Mendocino County, CACA88,122147–

31Humboldt County, CACA131,647110–

32Shasta County, CACA181,648109–

33Madera County, CACA167,927104–

34Lake County, CACA67,77294–

35Tehama County, CACA64,66591–

36Siskiyou County, CACA42,01389–

37Napa County, CACA132,94969–

38Tulare County, CACA485,14666–

39Tuolumne County, CACA53,16056–

40Merced County, CACA297,26046–

41Sutter County, CACA98,78731–

42Calaveras County, CACA46,60522–

43Inyo County, CACA18,15817–

44Kings County, CACA154,32716–

45Mariposa County, CACA16,91813–

46Imperial County, CACA181,41110–

47Lassen County, CACA28,11710–

SHOWING 1–47 OF 47

Download CSV (full list, 47 rows)

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