RANKING · 2020 CENSUS · 96 SHOWN OF 96

Highest Czech population share, Illinois counties · 2020

Illinois counties ranked by the share of all residents who are Czech ancestry (2020 American Community Survey). A concentration measure: Czech residents as a percentage of total population. This list covers the 96 counties in Illinois that qualify, ranked against each other statewide. The median across all 96 is 0.3%.

Czech Americans: full group profile →

IllinoisAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPCZECH SHAREVS 2010

01DuPage County, ILIL934,2981.9%−0.7 pts

02Will County, ILIL712,2531.4%−0.5 pts

03McHenry County, ILIL317,7511.3%−0.5 pts

04Kendall County, ILIL145,4701.2%−0.8 pts

05Jo Daviess County, ILIL21,5941.2%+0.7 pts

06Grundy County, ILIL54,0521.1%−0.9 pts

07Livingston County, ILIL35,0571.0%+0.5 pts

08DeKalb County, ILIL101,8351.0%−0.2 pts

09Kane County, ILIL525,7570.9%−0.3 pts

10Boone County, ILIL53,5680.9%+0.2 pts

11LaSalle County, ILIL107,7730.8%0.0 pts

12Lake County, ILIL719,3390.8%−0.2 pts

13Jersey County, ILIL21,1600.8%+0.6 pts

14Woodford County, ILIL38,1110.7%+0.3 pts

15Piatt County, ILIL16,7910.7%+0.1 pts

16Cook County, ILIL5,194,6250.7%−0.3 pts

17Bond County, ILIL16,9590.7%+0.4 pts

18Mercer County, ILIL15,2290.6%−0.5 pts

19Stephenson County, ILIL43,2200.6%0.0 pts

20Lee County, ILIL32,9140.6%−0.1 pts

21Rock Island County, ILIL141,8690.6%−0.1 pts

22Henry County, ILIL48,0950.6%−0.1 pts

23Moultrie County, ILIL14,3710.5%+0.4 pts

24McLean County, ILIL171,4190.5%−0.1 pts

25Kankakee County, ILIL105,5250.5%−0.1 pts

26Madison County, ILIL263,1100.5%−0.1 pts

27Menard County, ILIL11,8630.5%+0.2 pts

28Iroquois County, ILIL26,1500.4%+0.1 pts

29Winnebago County, ILIL283,6740.4%−0.1 pts

30Ford County, ILIL13,2160.4%+0.1 pts

31Monroe County, ILIL34,8400.4%−0.5 pts

32Champaign County, ILIL209,9720.4%−0.1 pts

33Bureau County, ILIL32,5100.4%−0.1 pts

34Washington County, ILIL13,5640.4%+0.3 pts

35Clark County, ILIL15,1140.4%+0.3 pts

36Knox County, ILIL47,7670.4%0.0 pts

37Coles County, ILIL46,6070.4%+0.1 pts

38McDonough County, ILIL25,9160.4%−0.1 pts

39Ogle County, ILIL51,3990.4%−0.7 pts

40Logan County, ILIL27,1820.4%−0.1 pts

41Putnam County, ILIL5,6190.3%+0.2 pts

42Jackson County, ILIL52,5010.3%−0.1 pts

43Sangamon County, ILIL194,1700.3%−0.1 pts

44Carroll County, ILIL15,4190.3%−1.2 pts

45Whiteside County, ILIL54,1210.3%−0.4 pts

46Schuyler County, ILIL6,6570.3%–

47St. Clair County, ILIL250,7080.3%−0.2 pts

48Peoria County, ILIL178,5530.3%−0.3 pts

49Morgan County, ILIL32,5150.3%−0.2 pts

50Crawford County, ILIL18,6480.3%+0.1 pts

51Macon County, ILIL99,3000.3%+0.1 pts

52Perry County, ILIL20,1600.3%+0.1 pts

53Henderson County, ILIL5,9840.3%−0.2 pts

54Marion County, ILIL36,3820.3%0.0 pts

55Tazewell County, ILIL130,0490.3%−0.2 pts

56Jefferson County, ILIL36,1470.2%+0.1 pts

57Marshall County, ILIL11,4730.2%−0.7 pts

58Fulton County, ILIL32,9010.2%−0.2 pts

59Douglas County, ILIL19,8800.2%+0.2 pts

60Montgomery County, ILIL28,0760.2%−0.5 pts

61Hancock County, ILIL16,8030.2%−0.2 pts

62Calhoun County, ILIL4,3000.2%−0.1 pts

63Macoupin County, ILIL43,7480.2%−0.3 pts

64Massac County, ILIL13,5020.2%−0.2 pts

65Clinton County, ILIL37,1280.2%−0.1 pts

66Shelby County, ILIL20,5760.2%−0.2 pts

67Union County, ILIL16,6560.2%−0.2 pts

68Randolph County, ILIL29,9210.2%0.0 pts

69Williamson County, ILIL67,2250.2%−0.4 pts

70Vermilion County, ILIL71,2590.2%−0.1 pts

71Effingham County, ILIL34,5190.2%+0.1 pts

72Johnson County, ILIL13,3630.2%−0.2 pts

73Alexander County, ILIL4,5700.1%−0.3 pts

74Richland County, ILIL15,2190.1%+0.1 pts

75Hamilton County, ILIL7,8590.1%−0.2 pts

76Pike County, ILIL14,2310.1%+0.1 pts

77Franklin County, ILIL36,9160.1%−0.2 pts

78Jasper County, ILIL9,0320.1%−0.2 pts

79De Witt County, ILIL15,1180.1%+0.1 pts

80Christian County, ILIL33,4430.1%−0.4 pts

81Brown County, ILIL6,4010.1%–

82Cumberland County, ILIL10,2080.1%−0.3 pts

83Adams County, ILIL64,2670.1%−0.2 pts

84Fayette County, ILIL20,7900.1%−0.4 pts

85Wabash County, ILIL10,9070.1%−0.1 pts

86Edwards County, ILIL5,8980.1%−0.1 pts

87Lawrence County, ILIL13,7900.1%0.0 pts

88Pope County, ILIL3,6720.1%−1.0 pts

89Warren County, ILIL16,2220.1%−0.1 pts

90Clay County, ILIL12,7930.1%–

91Wayne County, ILIL15,8820.1%−0.1 pts

92Scott County, ILIL4,8660.0%−0.1 pts

93Saline County, ILIL22,7720.0%−0.1 pts

94Mason County, ILIL12,4110.0%0.0 pts

95Greene County, ILIL11,3130.0%0.0 pts

96Cass County, ILIL12,4630.0%−0.2 pts

SHOWING 1–96 OF 96

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