RANKING · 2024 ACS · 51 SHOWN OF 51

Largest Romanian population, California counties

California counties ranked by the number of residents who are Romanian ancestry, 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 51 counties in California that qualify, ranked against each other statewide. The median across all 51 is 205. Biggest climber in the top 100 since 2020: Kings County, CA, up 15 places to #30.

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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 2010

01Los Angeles County, CACA9,694,93415,235−18%

02▲1Orange County, CACA3,149,5077,654−19%

03▼1Sacramento County, CACA1,618,4606,987+12%

04▲2Riverside County, CACA2,544,9164,229−10%

05▼1San Diego County, CACA3,282,2484,002−2%

06▼1Santa Clara County, CACA1,914,3913,110−6%

07Alameda County, CACA1,636,6303,032+30%

08▲4San Francisco County, CACA826,0791,961+1%

09Placer County, CACA442,0811,837+114%

10▼2San Bernardino County, CACA2,224,0911,537−37%

11San Mateo County, CACA743,5681,248+27%

12▼2Contra Costa County, CACA1,170,0701,244−18%

13Ventura County, CACA830,8511,196−31%

14▲1Sonoma County, CACA486,444585+1%

15▲12Fresno County, CACA1,035,456563+6%

16▼2Marin County, CACA253,694553−58%

17▲9Kern County, CACA927,068532+55%

18▼1Santa Cruz County, CACA258,852489−15%

19▼1Yolo County, CACA224,410407+4%

20Santa Barbara County, CACA442,065339−32%

21Butte County, CACA209,211313−8%

22▼3Solano County, CACA455,376270+12%

23▲2San Luis Obispo County, CACA282,367265−19%

24▼8El Dorado County, CACA192,323249−23%

25▲4Yuba County, CACA88,691218−73%

26▼3San Joaquin County, CACA823,815205−52%

27▼3Stanislaus County, CACA557,719205−79%

28▲4Nevada County, CACA101,911204+22%

29▼7Monterey County, CACA433,729136−53%

30▲15Kings County, CACA154,327134+738%

31Tulare County, CACA485,146127+92%

32▲1Madera County, CACA167,92796−8%

33▼5Mendocino County, CACA88,12287−41%

34▼4Napa County, CACA132,94986+25%

35▲5Humboldt County, CACA131,64783−25%

36▲3Merced County, CACA297,26071+54%

37▼3Tuolumne County, CACA53,16062+11%

38▼3Shasta County, CACA181,64855−50%

39▲3Lake County, CACA67,77254−43%

40▼3Sutter County, CACA98,78736+16%

41Calaveras County, CACA46,60530+36%

42▲6Tehama County, CACA64,66528−69%

43Siskiyou County, CACA42,01326−71%

44Del Norte County, CACA26,41018–

45▼1Lassen County, CACA28,11716+60%

46▼10Amador County, CACA41,87614–

47▼6San Benito County, CACA70,08214–

48▼2Inyo County, CACA18,15812−29%

49Sierra County, CACA3,0989–

50▼3Alpine County, CACA1,0436–

51▼2Imperial County, CACA181,4115−50%

SHOWING 1–51 OF 51

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES