RANKING · 2020 CENSUS · 58 SHOWN OF 58

Highest Swiss population share, California counties · 2020

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 58 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, CACA3,0986.0%–

02Modoc County, CACA8,4261.2%–

03Inyo County, CACA18,1580.9%–

04Sonoma County, CACA486,4440.8%–

05Marin County, CACA253,6940.8%–

06Del Norte County, CACA26,4100.8%–

07San Luis Obispo County, CACA282,3670.7%–

08San Benito County, CACA70,0820.7%–

09Alpine County, CACA1,0430.7%–

10Humboldt County, CACA131,6470.7%–

11Tuolumne County, CACA53,1600.6%–

12Butte County, CACA209,2110.6%–

13Napa County, CACA132,9490.5%–

14Mono County, CACA12,5050.5%–

15El Dorado County, CACA192,3230.5%–

16Santa Barbara County, CACA442,0650.5%–

17Lassen County, CACA28,1170.5%–

18Plumas County, CACA18,5830.5%–

19Santa Cruz County, CACA258,8520.5%–

20Mendocino County, CACA88,1220.5%–

21Placer County, CACA442,0810.5%–

22Shasta County, CACA181,6480.5%–

23Siskiyou County, CACA42,0130.5%–

24Nevada County, CACA101,9110.5%–

25Yolo County, CACA224,4100.4%–

26Amador County, CACA41,8760.4%–

27Monterey County, CACA433,7290.4%–

28San Mateo County, CACA743,5680.4%–

29Lake County, CACA67,7720.4%–

30Stanislaus County, CACA557,7190.4%–

31Sacramento County, CACA1,618,4600.3%–

32San Francisco County, CACA826,0790.3%–

33Glenn County, CACA28,1410.3%–

34Colusa County, CACA21,8360.3%–

35Calaveras County, CACA46,6050.3%–

36Contra Costa County, CACA1,170,0700.3%–

37Santa Clara County, CACA1,914,3910.3%–

38Mariposa County, CACA16,9180.3%–

39Alameda County, CACA1,636,6300.3%–

40Imperial County, CACA181,4110.3%–

41San Diego County, CACA3,282,2480.3%–

42San Joaquin County, CACA823,8150.2%–

43Tehama County, CACA64,6650.2%–

44Ventura County, CACA830,8510.2%–

45Sutter County, CACA98,7870.2%–

46Orange County, CACA3,149,5070.2%–

47Trinity County, CACA15,7200.2%–

48Merced County, CACA297,2600.2%–

49Solano County, CACA455,3760.2%–

50Kings County, CACA154,3270.2%–

51Fresno County, CACA1,035,4560.2%–

52Los Angeles County, CACA9,694,9340.1%–

53San Bernardino County, CACA2,224,0910.1%–

54Kern County, CACA927,0680.1%–

55Riverside County, CACA2,544,9160.1%–

56Yuba County, CACA88,6910.1%–

57Madera County, CACA167,9270.1%–

58Tulare County, CACA485,1460.1%–

SHOWING 1–58 OF 58

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