RANKING · 2010 CENSUS · 57 SHOWN OF 57

Highest Swiss population share, California counties · 2010

California counties ranked by the share of all residents who are Swiss ancestry (2023 American Community Survey). A concentration measure: Swiss residents as a percentage of total population. This list covers the 57 counties in California that qualify, ranked against each other statewide.

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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

RANKPLACESTATEPOPSWISS SHAREVS 2000

01Sierra County, CACA3,0984.2%–

02Trinity County, CACA15,7201.6%–

03San Luis Obispo County, CACA282,3671.0%–

04Nevada County, CACA101,9111.0%–

05Marin County, CACA253,6941.0%–

06Mono County, CACA12,5051.0%–

07Humboldt County, CACA131,6471.0%–

08Sonoma County, CACA486,4440.9%–

09El Dorado County, CACA192,3230.9%–

10Alpine County, CACA1,0430.9%–

11Colusa County, CACA21,8360.8%–

12Monterey County, CACA433,7290.7%–

13Plumas County, CACA18,5830.7%–

14Butte County, CACA209,2110.7%–

15Tuolumne County, CACA53,1600.7%–

16Napa County, CACA132,9490.7%–

17Amador County, CACA41,8760.7%–

18Lake County, CACA67,7720.6%–

19Santa Cruz County, CACA258,8520.6%–

20Mendocino County, CACA88,1220.6%–

21San Benito County, CACA70,0820.6%–

22Placer County, CACA442,0810.6%–

23Glenn County, CACA28,1410.6%–

24Santa Barbara County, CACA442,0650.6%–

25Yolo County, CACA224,4100.6%–

26Calaveras County, CACA46,6050.6%–

27Stanislaus County, CACA557,7190.6%–

28Siskiyou County, CACA42,0130.5%–

29Shasta County, CACA181,6480.5%–

30Sutter County, CACA98,7870.5%–

31Lassen County, CACA28,1170.5%–

32Modoc County, CACA8,4260.5%–

33Del Norte County, CACA26,4100.4%–

34San Mateo County, CACA743,5680.4%–

35San Francisco County, CACA826,0790.4%–

36San Joaquin County, CACA823,8150.4%–

37Contra Costa County, CACA1,170,0700.4%–

38Santa Clara County, CACA1,914,3910.4%–

39Tehama County, CACA64,6650.4%–

40Sacramento County, CACA1,618,4600.4%–

41Solano County, CACA455,3760.3%–

42San Diego County, CACA3,282,2480.3%–

43Merced County, CACA297,2600.3%–

44Ventura County, CACA830,8510.3%–

45Alameda County, CACA1,636,6300.3%–

46Yuba County, CACA88,6910.3%–

47Orange County, CACA3,149,5070.3%–

48Inyo County, CACA18,1580.2%–

49Fresno County, CACA1,035,4560.2%–

50Imperial County, CACA181,4110.2%–

51Madera County, CACA167,9270.2%–

52Riverside County, CACA2,544,9160.2%–

53Kern County, CACA927,0680.2%–

54Los Angeles County, CACA9,694,9340.2%–

55Tulare County, CACA485,1460.2%–

56San Bernardino County, CACA2,224,0910.2%–

57Kings County, CACA154,3270.2%–

SHOWING 1–57 OF 57

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