RANKING · 2020 CENSUS · 50 SHOWN OF 50

Largest Romanian population, California counties · 2020

California counties ranked by the number of residents who are Romanian ancestry, 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 50 counties in California that qualify, ranked against each other statewide. The median across all 50 is 343.

Romanian Americans: full group profile →

CaliforniaAll states All rankings

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 2010

01Los Angeles County, CACA9,694,93415,728−16%

02Sacramento County, CACA1,618,4607,896+27%

03Orange County, CACA3,149,5077,096−25%

04San Diego County, CACA3,282,2483,804−7%

05Santa Clara County, CACA1,914,3913,3070%

06Riverside County, CACA2,544,9163,225−32%

07Alameda County, CACA1,636,6302,474+6%

08San Bernardino County, CACA2,224,0912,405−1%

09Placer County, CACA442,0811,600+86%

10Contra Costa County, CACA1,170,0701,584+4%

11San Mateo County, CACA743,5681,334+35%

12San Francisco County, CACA826,0791,317−32%

13Ventura County, CACA830,8511,206−30%

14Marin County, CACA253,694772−42%

15Sonoma County, CACA486,444677+17%

16El Dorado County, CACA192,323472+45%

17Santa Cruz County, CACA258,852425−26%

18Yolo County, CACA224,410416+6%

19Solano County, CACA455,376409+70%

20Santa Barbara County, CACA442,065405−19%

21Butte County, CACA209,211403+19%

22Monterey County, CACA433,729400+37%

23San Joaquin County, CACA823,815379−11%

24Stanislaus County, CACA557,719361−62%

25San Luis Obispo County, CACA282,367343+5%

26Kern County, CACA927,068321−7%

27Fresno County, CACA1,035,456272−49%

28Mendocino County, CACA88,122186+27%

29Yuba County, CACA88,691177−78%

30Napa County, CACA132,949166+141%

31Tulare County, CACA485,146164+148%

32Nevada County, CACA101,911161−4%

33Madera County, CACA167,927159+53%

34Tuolumne County, CACA53,160140+150%

35Shasta County, CACA181,648129+18%

36Amador County, CACA41,87669–

37Sutter County, CACA98,78765+110%

38Glenn County, CACA28,14160–

39Merced County, CACA297,26050+9%

40Humboldt County, CACA131,64728−75%

41San Benito County, CACA70,08227–

42Lake County, CACA67,77221−78%

43Siskiyou County, CACA42,01321−76%

44Lassen County, CACA28,11718+80%

45Kings County, CACA154,32714−13%

46Inyo County, CACA18,15812−29%

47Alpine County, CACA1,0439–

48Tehama County, CACA64,6659−90%

49Imperial County, CACA181,4118−20%

50Plumas County, CACA18,5834–

SHOWING 1–50 OF 50

Download CSV (full list, 50 rows)

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