RANKING · 2024 ACS · 55 SHOWN OF 55

Highest Czech population share, California counties

California counties ranked by the share of all residents who are Czech ancestry (2024 American Community Survey). A concentration measure: Czech residents as a percentage of total population. This list covers the 55 counties in California that qualify, ranked against each other statewide.

Czech Americans: full group profile →

CaliforniaAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPCZECH SHAREVS 2010

01Plumas County, CACA18,5830.8%−0.4 pts

02Santa Cruz County, CACA258,8520.5%−0.0 pts

03Marin County, CACA253,6940.5%−0.1 pts

04Mendocino County, CACA88,1220.4%−0.3 pts

05Del Norte County, CACA26,4100.4%−0.1 pts

06Butte County, CACA209,2110.4%−0.1 pts

07El Dorado County, CACA192,3230.4%+0.0 pts

08Sonoma County, CACA486,4440.4%−0.1 pts

09Inyo County, CACA18,1580.3%−0.2 pts

10Amador County, CACA41,8760.3%+0.2 pts

11Yolo County, CACA224,4100.3%+0.0 pts

12Ventura County, CACA830,8510.3%−0.0 pts

13Placer County, CACA442,0810.3%−0.1 pts

14San Benito County, CACA70,0820.3%−0.2 pts

15Lassen County, CACA28,1170.3%−0.3 pts

16Shasta County, CACA181,6480.3%−0.1 pts

17Siskiyou County, CACA42,0130.3%−0.2 pts

18San Luis Obispo County, CACA282,3670.3%−0.3 pts

19Tuolumne County, CACA53,1600.3%−0.1 pts

20Nevada County, CACA101,9110.3%−0.2 pts

21San Mateo County, CACA743,5680.3%−0.1 pts

22Contra Costa County, CACA1,170,0700.3%−0.1 pts

23San Francisco County, CACA826,0790.2%−0.1 pts

24San Diego County, CACA3,282,2480.2%−0.1 pts

25Napa County, CACA132,9490.2%+0.0 pts

26Orange County, CACA3,149,5070.2%−0.1 pts

27Modoc County, CACA8,4260.2%−0.5 pts

28Tehama County, CACA64,6650.2%−0.0 pts

29Santa Clara County, CACA1,914,3910.2%−0.1 pts

30Sutter County, CACA98,7870.2%−0.2 pts

31Sacramento County, CACA1,618,4600.2%−0.1 pts

32Humboldt County, CACA131,6470.2%−0.2 pts

33Lake County, CACA67,7720.2%−0.2 pts

34Alameda County, CACA1,636,6300.2%−0.0 pts

35Riverside County, CACA2,544,9160.2%−0.1 pts

36Santa Barbara County, CACA442,0650.2%−0.2 pts

37Monterey County, CACA433,7290.2%−0.2 pts

38Los Angeles County, CACA9,694,9340.1%−0.0 pts

39Fresno County, CACA1,035,4560.1%−0.0 pts

40Solano County, CACA455,3760.1%−0.0 pts

41Madera County, CACA167,9270.1%−0.0 pts

42Calaveras County, CACA46,6050.1%−0.3 pts

43San Joaquin County, CACA823,8150.1%−0.0 pts

44San Bernardino County, CACA2,224,0910.1%−0.1 pts

45Kern County, CACA927,0680.1%−0.1 pts

46Glenn County, CACA28,1410.1%−0.0 pts

47Yuba County, CACA88,6910.1%−0.0 pts

48Stanislaus County, CACA557,7190.1%−0.0 pts

49Mariposa County, CACA16,9180.1%–

50Kings County, CACA154,3270.1%−0.0 pts

51Imperial County, CACA181,4110.0%+0.0 pts

52Tulare County, CACA485,1460.0%−0.1 pts

53Colusa County, CACA21,8360.0%−0.1 pts

54Merced County, CACA297,2600.0%−0.0 pts

55Trinity County, CACA15,7200.0%−0.8 pts

SHOWING 1–55 OF 55

Download CSV (full list, 55 rows)

UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES