RANKING · 2024 ACS · 93 SHOWN OF 93

Highest Czech population share, Illinois counties

Illinois 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 93 counties in Illinois that qualify, ranked against each other statewide. The median across all 93 is 0.3%. Biggest climber in the top 100 since 2020: Scott County, IL, up 80 places to #12.

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IllinoisAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPCZECH SHAREVS 2010

01DuPage County, ILIL934,2981.5%−1.0 pts

02▲4Grundy County, ILIL54,0521.2%−0.8 pts

03▼1Will County, ILIL712,2531.2%−0.7 pts

04▼1McHenry County, ILIL317,7511.2%−0.7 pts

05▼1Kendall County, ILIL145,4701.1%−0.8 pts

06▼1Jo Daviess County, ILIL21,5941.0%+0.5 pts

07▲1DeKalb County, ILIL101,8350.9%−0.2 pts

08▲1Kane County, ILIL525,7570.9%−0.3 pts

09▲4Jersey County, ILIL21,1600.8%+0.6 pts

10▲1LaSalle County, ILIL107,7730.8%−0.1 pts

11▲51Calhoun County, ILIL4,3000.8%+0.5 pts

12▲80Scott County, ILIL4,8660.8%+0.7 pts

13▲2Piatt County, ILIL16,7910.8%+0.2 pts

14▲4Mercer County, ILIL15,2290.7%−0.5 pts

15▲24Ogle County, ILIL51,3990.6%−0.4 pts

16▼6Boone County, ILIL53,5680.6%−0.1 pts

17▲14Monroe County, ILIL34,8400.6%−0.3 pts

18▼2Cook County, ILIL5,194,6250.6%−0.3 pts

19▲7Madison County, ILIL263,1100.6%−0.1 pts

20▼8Lake County, ILIL719,3390.6%−0.4 pts

21▲12Bureau County, ILIL32,5100.5%0.0 pts

22▲58Christian County, ILIL33,4430.5%0.0 pts

23▼1Henry County, ILIL48,0950.5%−0.1 pts

24▲1Kankakee County, ILIL105,5250.5%−0.1 pts

25▲19Carroll County, ILIL15,4190.5%−1.1 pts

26▼6Lee County, ILIL32,9140.5%−0.3 pts

27▼4Moultrie County, ILIL14,3710.4%+0.3 pts

28▼21Livingston County, ILIL35,0570.4%0.0 pts

29▲3Champaign County, ILIL209,9720.4%−0.1 pts

30▼6McLean County, ILIL171,4190.4%−0.2 pts

31▼12Stephenson County, ILIL43,2200.4%−0.2 pts

32▼3Winnebago County, ILIL283,6740.4%−0.2 pts

33▲21Marion County, ILIL36,3820.4%+0.2 pts

34▼7Menard County, ILIL11,8630.4%+0.1 pts

35▼14Rock Island County, ILIL141,8690.4%−0.3 pts

36▲52Pope County, ILIL3,6720.3%−0.7 pts

37▲23Montgomery County, ILIL28,0760.3%−0.4 pts

38▼24Woodford County, ILIL38,1110.3%−0.1 pts

39▲19Fulton County, ILIL32,9010.3%−0.1 pts

40▼3Coles County, ILIL46,6070.3%0.0 pts

41▲7Peoria County, ILIL178,5530.3%−0.3 pts

42▲5St. Clair County, ILIL250,7080.3%−0.2 pts

43▼1Jackson County, ILIL52,5010.3%−0.1 pts

44▼16Iroquois County, ILIL26,1500.3%−0.1 pts

45▲10Tazewell County, ILIL130,0490.3%−0.2 pts

46▲10Jefferson County, ILIL36,1470.3%+0.1 pts

47▼13Washington County, ILIL13,5640.3%+0.1 pts

48Hardin County, ILIL3,5880.2%–

49▲21Vermilion County, ILIL71,2590.2%0.0 pts

50▲32Cumberland County, ILIL10,2080.2%−0.2 pts

51▼6Whiteside County, ILIL54,1210.2%−0.5 pts

52▲14Shelby County, ILIL20,5760.2%−0.1 pts

53▲31Fayette County, ILIL20,7900.2%−0.2 pts

54▲20Richland County, ILIL15,2190.2%+0.1 pts

55▼12Sangamon County, ILIL194,1700.2%−0.2 pts

56▲7Macoupin County, ILIL43,7480.2%−0.3 pts

57Marshall County, ILIL11,4730.2%−0.7 pts

58▲31Warren County, ILIL16,2220.2%0.0 pts

59▼24Clark County, ILIL15,1140.2%+0.1 pts

60▼19Putnam County, ILIL5,6190.2%+0.1 pts

61▲7Randolph County, ILIL29,9210.2%0.0 pts

62▼26Knox County, ILIL47,7670.2%−0.2 pts

63▼13Crawford County, ILIL18,6480.2%0.0 pts

64▼47Bond County, ILIL16,9590.2%−0.1 pts

65▲18Adams County, ILIL64,2670.2%−0.1 pts

66▼14Perry County, ILIL20,1600.2%0.0 pts

67Stark County, ILIL5,3190.2%0.0 pts

68▲25Saline County, ILIL22,7720.2%+0.1 pts

69▼8Hancock County, ILIL16,8030.2%−0.3 pts

70▼24Schuyler County, ILIL6,6570.2%–

71▲1Johnson County, ILIL13,3630.2%−0.2 pts

72▼19Henderson County, ILIL5,9840.1%−0.4 pts

73▼4Williamson County, ILIL67,2250.1%−0.4 pts

74▲1Hamilton County, ILIL7,8590.1%−0.2 pts

75▼24Macon County, ILIL99,3000.1%−0.1 pts

76▼38McDonough County, ILIL25,9160.1%−0.4 pts

77▼28Morgan County, ILIL32,5150.1%−0.4 pts

78▼38Logan County, ILIL27,1820.1%−0.3 pts

79▼2Franklin County, ILIL36,9160.1%−0.2 pts

80▼7Alexander County, ILIL4,5700.1%−0.4 pts

81▼16Clinton County, ILIL37,1280.1%−0.2 pts

82▼52Ford County, ILIL13,2160.1%−0.2 pts

83White County, ILIL13,2500.1%−0.1 pts

84▲10Mason County, ILIL12,4110.1%0.0 pts

85▼9Pike County, ILIL14,2310.1%+0.1 pts

86▲1Lawrence County, ILIL13,7900.0%0.0 pts

87▲4Wayne County, ILIL15,8820.0%−0.1 pts

88▲2Clay County, ILIL12,7930.0%–

89▼30Douglas County, ILIL19,8800.0%0.0 pts

90▼11De Witt County, ILIL15,1180.0%0.0 pts

91▼24Union County, ILIL16,6560.0%−0.4 pts

92▲4Cass County, ILIL12,4630.0%−0.2 pts

93▼22Effingham County, ILIL34,5190.0%0.0 pts

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES