RANKING · 2010 CENSUS · 39 SHOWN OF 39

Highest Bulgarian population share, California counties · 2010

California counties ranked by the share of all residents who are Bulgarian ancestry (2023 American Community Survey). A concentration measure: Bulgarian residents as a percentage of total population. This list covers the 39 counties in California that qualify, ranked against each other statewide.

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

YEAR2010 2020 2024

Highest Bulgarian population share by state

RANKPLACESTATEPOPBULGARIAN SHAREVS 2000

01Plumas County, CACA18,5830.2%–

02Siskiyou County, CACA42,0130.1%–

03El Dorado County, CACA192,3230.1%–

04Marin County, CACA253,6940.1%–

05Butte County, CACA209,2110.1%–

06Contra Costa County, CACA1,170,0700.1%–

07Santa Clara County, CACA1,914,3910.1%–

08San Francisco County, CACA826,0790.1%–

09Mendocino County, CACA88,1220.1%–

10Lake County, CACA67,7720.1%–

11Santa Cruz County, CACA258,8520.0%–

12Placer County, CACA442,0810.0%–

13Los Angeles County, CACA9,694,9340.0%–

14Sacramento County, CACA1,618,4600.0%–

15San Diego County, CACA3,282,2480.0%–

16Tehama County, CACA64,6650.0%–

17Sonoma County, CACA486,4440.0%–

18San Mateo County, CACA743,5680.0%–

19Orange County, CACA3,149,5070.0%–

20San Benito County, CACA70,0820.0%–

21Solano County, CACA455,3760.0%–

22Alameda County, CACA1,636,6300.0%–

23Ventura County, CACA830,8510.0%–

24Santa Barbara County, CACA442,0650.0%–

25Riverside County, CACA2,544,9160.0%–

26Madera County, CACA167,9270.0%–

27San Joaquin County, CACA823,8150.0%–

28Yolo County, CACA224,4100.0%–

29Monterey County, CACA433,7290.0%–

30San Bernardino County, CACA2,224,0910.0%–

31Humboldt County, CACA131,6470.0%–

32Napa County, CACA132,9490.0%–

33Shasta County, CACA181,6480.0%–

34Nevada County, CACA101,9110.0%–

35Kern County, CACA927,0680.0%–

36San Luis Obispo County, CACA282,3670.0%–

37Tulare County, CACA485,1460.0%–

38Sutter County, CACA98,7870.0%–

39Stanislaus County, CACA557,7190.0%–

SHOWING 1–39 OF 39

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES