RANKING · 2024 ACS · 51 SHOWN OF 51

Highest Romanian population share, California counties

California counties ranked by the share of all residents who are Romanian ancestry (2024 American Community Survey). A concentration measure: Romanian residents as a percentage of total population. This list covers the 51 counties in California that qualify, ranked against each other statewide.

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 SHAREVS 2010

01Sacramento County, CACA1,618,4600.4%−0.0 pts

02Placer County, CACA442,0810.4%+0.2 pts

03Alpine County, CACA1,0430.4%–

04Sierra County, CACA3,0980.3%–

05Yuba County, CACA88,6910.3%−0.9 pts

06Orange County, CACA3,149,5070.2%−0.1 pts

07San Francisco County, CACA826,0790.2%−0.0 pts

08Marin County, CACA253,6940.2%−0.3 pts

09Nevada County, CACA101,9110.2%+0.0 pts

10Santa Cruz County, CACA258,8520.2%−0.0 pts

11Yolo County, CACA224,4100.2%−0.0 pts

12Alameda County, CACA1,636,6300.2%+0.0 pts

13Riverside County, CACA2,544,9160.2%−0.1 pts

14San Mateo County, CACA743,5680.2%+0.0 pts

15Santa Clara County, CACA1,914,3910.2%−0.0 pts

16Los Angeles County, CACA9,694,9340.2%−0.0 pts

17Butte County, CACA209,2110.2%−0.0 pts

18Ventura County, CACA830,8510.1%−0.1 pts

19El Dorado County, CACA192,3230.1%−0.1 pts

20San Diego County, CACA3,282,2480.1%−0.0 pts

21Sonoma County, CACA486,4440.1%−0.0 pts

22Tuolumne County, CACA53,1600.1%+0.0 pts

23Contra Costa County, CACA1,170,0700.1%−0.0 pts

24Mendocino County, CACA88,1220.1%−0.1 pts

25San Luis Obispo County, CACA282,3670.1%−0.0 pts

26Kings County, CACA154,3270.1%+0.1 pts

27Lake County, CACA67,7720.1%−0.1 pts

28Santa Barbara County, CACA442,0650.1%−0.0 pts

29San Bernardino County, CACA2,224,0910.1%−0.1 pts

30Del Norte County, CACA26,4100.1%–

31Calaveras County, CACA46,6050.1%+0.0 pts

32Inyo County, CACA18,1580.1%−0.0 pts

33Napa County, CACA132,9490.1%+0.0 pts

34Humboldt County, CACA131,6470.1%−0.0 pts

35Siskiyou County, CACA42,0130.1%−0.1 pts

36Solano County, CACA455,3760.1%+0.0 pts

37Madera County, CACA167,9270.1%−0.0 pts

38Kern County, CACA927,0680.1%+0.0 pts

39Fresno County, CACA1,035,4560.1%−0.0 pts

40Lassen County, CACA28,1170.1%+0.0 pts

41Tehama County, CACA64,6650.0%−0.1 pts

42Stanislaus County, CACA557,7190.0%−0.2 pts

43Sutter County, CACA98,7870.0%+0.0 pts

44Amador County, CACA41,8760.0%–

45Monterey County, CACA433,7290.0%−0.0 pts

46Shasta County, CACA181,6480.0%−0.0 pts

47Tulare County, CACA485,1460.0%+0.0 pts

48San Joaquin County, CACA823,8150.0%−0.0 pts

49Merced County, CACA297,2600.0%+0.0 pts

50San Benito County, CACA70,0820.0%–

51Imperial County, CACA181,4110.0%−0.0 pts

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES