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 (2020 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.

Swiss Americans: full group profile →

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SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPSWISS SHAREVS 2010

01Sierra County, CACA3,0986.0%+1.7 pts

02Modoc County, CACA8,4261.2%+0.8 pts

03Inyo County, CACA18,1580.9%+0.6 pts

04Sonoma County, CACA486,4440.8%−0.1 pts

05Marin County, CACA253,6940.8%−0.2 pts

06Del Norte County, CACA26,4100.8%+0.3 pts

07San Luis Obispo County, CACA282,3670.7%−0.3 pts

08San Benito County, CACA70,0820.7%+0.1 pts

09Alpine County, CACA1,0430.7%−0.2 pts

10Humboldt County, CACA131,6470.7%−0.3 pts

11Tuolumne County, CACA53,1600.6%−0.1 pts

12Butte County, CACA209,2110.6%−0.2 pts

13Napa County, CACA132,9490.5%−0.2 pts

14Mono County, CACA12,5050.5%−0.4 pts

15El Dorado County, CACA192,3230.5%−0.4 pts

16Santa Barbara County, CACA442,0650.5%−0.1 pts

17Lassen County, CACA28,1170.5%+0.0 pts

18Plumas County, CACA18,5830.5%−0.3 pts

19Santa Cruz County, CACA258,8520.5%−0.2 pts

20Mendocino County, CACA88,1220.5%−0.2 pts

21Placer County, CACA442,0810.5%−0.1 pts

22Shasta County, CACA181,6480.5%−0.1 pts

23Siskiyou County, CACA42,0130.5%−0.1 pts

24Nevada County, CACA101,9110.5%−0.6 pts

25Yolo County, CACA224,4100.4%−0.2 pts

26Amador County, CACA41,8760.4%−0.3 pts

27Monterey County, CACA433,7290.4%−0.4 pts

28San Mateo County, CACA743,5680.4%−0.1 pts

29Lake County, CACA67,7720.4%−0.3 pts

30Stanislaus County, CACA557,7190.4%−0.2 pts

31Sacramento County, CACA1,618,4600.3%−0.0 pts

32San Francisco County, CACA826,0790.3%−0.1 pts

33Glenn County, CACA28,1410.3%−0.3 pts

34Colusa County, CACA21,8360.3%−0.5 pts

35Calaveras County, CACA46,6050.3%−0.3 pts

36Contra Costa County, CACA1,170,0700.3%−0.1 pts

37Santa Clara County, CACA1,914,3910.3%−0.1 pts

38Mariposa County, CACA16,9180.3%–

39Alameda County, CACA1,636,6300.3%−0.0 pts

40Imperial County, CACA181,4110.3%+0.0 pts

41San Diego County, CACA3,282,2480.3%−0.1 pts

42San Joaquin County, CACA823,8150.2%−0.2 pts

43Tehama County, CACA64,6650.2%−0.1 pts

44Ventura County, CACA830,8510.2%−0.1 pts

45Sutter County, CACA98,7870.2%−0.3 pts

46Orange County, CACA3,149,5070.2%−0.1 pts

47Trinity County, CACA15,7200.2%−1.3 pts

48Merced County, CACA297,2600.2%−0.1 pts

49Solano County, CACA455,3760.2%−0.2 pts

50Kings County, CACA154,3270.2%+0.0 pts

51Fresno County, CACA1,035,4560.2%−0.1 pts

52Los Angeles County, CACA9,694,9340.1%−0.0 pts

53San Bernardino County, CACA2,224,0910.1%−0.0 pts

54Kern County, CACA927,0680.1%−0.0 pts

55Riverside County, CACA2,544,9160.1%−0.1 pts

56Yuba County, CACA88,6910.1%−0.2 pts

57Madera County, CACA167,9270.1%−0.1 pts

58Tulare County, CACA485,1460.1%−0.1 pts

SHOWING 1–58 OF 58

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS