RANKING · 2010 CENSUS · 57 SHOWN OF 57

Largest Czech population, California counties · 2010

California counties ranked by the number of residents who are Czech ancestry, from the 2010 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 57 counties in California that qualify, ranked against each other statewide. The median across all 57 is 530.

Czech Americans: full group profile →

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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

RANKPLACESTATEPOPCZECH POPULATIONVS –

01Los Angeles County, CACA9,694,93417,272–

02San Diego County, CACA3,282,24811,932–

03Orange County, CACA3,149,5079,252–

04Riverside County, CACA2,544,9165,028–

05Santa Clara County, CACA1,914,3914,729–

06Sacramento County, CACA1,618,4603,992–

07San Bernardino County, CACA2,224,0913,408–

08Contra Costa County, CACA1,170,0703,368–

09San Francisco County, CACA826,0792,987–

10Alameda County, CACA1,636,6302,954–

11Ventura County, CACA830,8512,761–

12San Mateo County, CACA743,5682,129–

13Sonoma County, CACA486,4442,011–

14Fresno County, CACA1,035,4561,614–

15San Luis Obispo County, CACA282,3671,516–

16Marin County, CACA253,6941,475–

17Placer County, CACA442,0811,402–

18Santa Barbara County, CACA442,0651,358–

19Kern County, CACA927,0681,345–

20Monterey County, CACA433,7291,286–

21Santa Cruz County, CACA258,8521,255–

22Butte County, CACA209,2111,118–

23San Joaquin County, CACA823,815974–

24Shasta County, CACA181,648756–

25El Dorado County, CACA192,323649–

26Mendocino County, CACA88,122612–

27Solano County, CACA455,376571–

28Yolo County, CACA224,410556–

29Stanislaus County, CACA557,719530–

30Tulare County, CACA485,146528–

31Nevada County, CACA101,911474–

32Humboldt County, CACA131,647445–

33Sutter County, CACA98,787315–

34Napa County, CACA132,949297–

35San Benito County, CACA70,082264–

36Lake County, CACA67,772257–

37Plumas County, CACA18,583245–

38Lassen County, CACA28,117225–

39Siskiyou County, CACA42,013221–

40Tuolumne County, CACA53,160211–

41Madera County, CACA167,927207–

42Calaveras County, CACA46,605193–

43Merced County, CACA297,260159–

44Kings County, CACA154,327159–

45Del Norte County, CACA26,410142–

46Tehama County, CACA64,665134–

47Trinity County, CACA15,720110–

48Inyo County, CACA18,158109–

49Yuba County, CACA88,69196–

50Imperial County, CACA181,41172–

51Modoc County, CACA8,42669–

52Amador County, CACA41,87661–

53Glenn County, CACA28,14140–

54Sierra County, CACA3,09828–

55Colusa County, CACA21,83620–

56Mono County, CACA12,50512–

57Alpine County, CACA1,0433–

SHOWING 1–57 OF 57

Download CSV (full list, 57 rows)

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS