RANKING · 2010 CENSUS · 81 SHOWN OF 81

Highest Slovak population share, Illinois counties · 2010

Illinois counties ranked by the share of all residents who are Slovak ancestry (2023 American Community Survey). A concentration measure: Slovak residents as a percentage of total population. This list covers the 81 counties in Illinois that qualify, ranked against each other statewide.

IllinoisAll states All rankings

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

RANKPLACESTATEPOPSLOVAK SHAREVS 2000

01LaSalle County, ILIL107,7732.8%–

02Putnam County, ILIL5,6191.6%–

03Livingston County, ILIL35,0571.4%–

04Marshall County, ILIL11,4730.9%–

05Will County, ILIL712,2530.9%–

06Macoupin County, ILIL43,7480.8%–

07Grundy County, ILIL54,0520.8%–

08DuPage County, ILIL934,2980.6%–

09Kendall County, ILIL145,4700.4%–

10McLean County, ILIL171,4190.4%–

11Sangamon County, ILIL194,1700.4%–

12Lake County, ILIL719,3390.3%–

13Montgomery County, ILIL28,0760.3%–

14Christian County, ILIL33,4430.3%–

15Kane County, ILIL525,7570.3%–

16Cass County, ILIL12,4630.3%–

17Cook County, ILIL5,194,6250.3%–

18Bureau County, ILIL32,5100.3%–

19Jersey County, ILIL21,1600.3%–

20Madison County, ILIL263,1100.3%–

21Vermilion County, ILIL71,2590.3%–

22Mercer County, ILIL15,2290.3%–

23DeKalb County, ILIL101,8350.2%–

24Clark County, ILIL15,1140.2%–

25Ogle County, ILIL51,3990.2%–

26McHenry County, ILIL317,7510.2%–

27Schuyler County, ILIL6,6570.2%–

28Kankakee County, ILIL105,5250.2%–

29Woodford County, ILIL38,1110.2%–

30Ford County, ILIL13,2160.2%–

31Stark County, ILIL5,3190.2%–

32Peoria County, ILIL178,5530.2%–

33Johnson County, ILIL13,3630.2%–

34Menard County, ILIL11,8630.2%–

35Richland County, ILIL15,2190.2%–

36Champaign County, ILIL209,9720.2%–

37Randolph County, ILIL29,9210.2%–

38Lee County, ILIL32,9140.2%–

39Warren County, ILIL16,2220.2%–

40Shelby County, ILIL20,5760.2%–

41Franklin County, ILIL36,9160.2%–

42St. Clair County, ILIL250,7080.1%–

43Adams County, ILIL64,2670.1%–

44Edwards County, ILIL5,8980.1%–

45Massac County, ILIL13,5020.1%–

46Coles County, ILIL46,6070.1%–

47Fayette County, ILIL20,7900.1%–

48McDonough County, ILIL25,9160.1%–

49Hancock County, ILIL16,8030.1%–

50Crawford County, ILIL18,6480.1%–

51Rock Island County, ILIL141,8690.1%–

52Stephenson County, ILIL43,2200.1%–

53Tazewell County, ILIL130,0490.1%–

54Williamson County, ILIL67,2250.1%–

55Monroe County, ILIL34,8400.1%–

56Whiteside County, ILIL54,1210.1%–

57Macon County, ILIL99,3000.1%–

58Winnebago County, ILIL283,6740.1%–

59Iroquois County, ILIL26,1500.1%–

60Union County, ILIL16,6560.1%–

61White County, ILIL13,2500.1%–

62Brown County, ILIL6,4010.1%–

63Henry County, ILIL48,0950.1%–

64Perry County, ILIL20,1600.1%–

65Boone County, ILIL53,5680.1%–

66Jackson County, ILIL52,5010.1%–

67Edgar County, ILIL16,3230.1%–

68Jo Daviess County, ILIL21,5940.1%–

69Effingham County, ILIL34,5190.1%–

70Bond County, ILIL16,9590.0%–

71Knox County, ILIL47,7670.0%–

72Marion County, ILIL36,3820.0%–

73Piatt County, ILIL16,7910.0%–

74Logan County, ILIL27,1820.0%–

75Morgan County, ILIL32,5150.0%–

76Fulton County, ILIL32,9010.0%–

77Clinton County, ILIL37,1280.0%–

78Washington County, ILIL13,5640.0%–

79Carroll County, ILIL15,4190.0%–

80Moultrie County, ILIL14,3710.0%–

81Jefferson County, ILIL36,1470.0%–

SHOWING 1–81 OF 81

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES