RANKING · 2024 ACS · 74 SHOWN OF 74

Highest Slovak population share, Illinois counties

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 74 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, ILIL107,7731.4%–

02Livingston County, ILIL35,0570.9%–

03Grundy County, ILIL54,0520.8%–

04Will County, ILIL712,2530.6%–

05Marshall County, ILIL11,4730.5%–

06Christian County, ILIL33,4430.5%–

07DuPage County, ILIL934,2980.4%–

08DeKalb County, ILIL101,8350.4%–

09Sangamon County, ILIL194,1700.4%–

10Pulaski County, ILIL4,8200.4%–

11Menard County, ILIL11,8630.3%–

12Putnam County, ILIL5,6190.3%–

13Madison County, ILIL263,1100.3%–

14Macoupin County, ILIL43,7480.3%–

15Pike County, ILIL14,2310.2%–

16Piatt County, ILIL16,7910.2%–

17Kendall County, ILIL145,4700.2%–

18Kane County, ILIL525,7570.2%–

19Lake County, ILIL719,3390.2%–

20Cook County, ILIL5,194,6250.2%–

21Bureau County, ILIL32,5100.2%–

22McHenry County, ILIL317,7510.2%–

23Vermilion County, ILIL71,2590.2%–

24McLean County, ILIL171,4190.2%–

25Henry County, ILIL48,0950.2%–

26Hamilton County, ILIL7,8590.2%–

27Jo Daviess County, ILIL21,5940.2%–

28Montgomery County, ILIL28,0760.2%–

29Ford County, ILIL13,2160.1%–

30Mercer County, ILIL15,2290.1%–

31Shelby County, ILIL20,5760.1%–

32Richland County, ILIL15,2190.1%–

33Kankakee County, ILIL105,5250.1%–

34St. Clair County, ILIL250,7080.1%–

35Crawford County, ILIL18,6480.1%–

36Macon County, ILIL99,3000.1%–

37Adams County, ILIL64,2670.1%–

38Peoria County, ILIL178,5530.1%–

39Tazewell County, ILIL130,0490.1%–

40Carroll County, ILIL15,4190.1%–

41Winnebago County, ILIL283,6740.1%–

42Rock Island County, ILIL141,8690.1%–

43Bond County, ILIL16,9590.1%–

44Clinton County, ILIL37,1280.1%–

45Franklin County, ILIL36,9160.1%–

46Champaign County, ILIL209,9720.1%–

47Iroquois County, ILIL26,1500.1%–

48Williamson County, ILIL67,2250.1%–

49Boone County, ILIL53,5680.1%–

50White County, ILIL13,2500.1%–

51Jefferson County, ILIL36,1470.1%–

52Jackson County, ILIL52,5010.1%–

53Moultrie County, ILIL14,3710.0%–

54Morgan County, ILIL32,5150.0%–

55Mason County, ILIL12,4110.0%–

56Clay County, ILIL12,7930.0%–

57Lee County, ILIL32,9140.0%–

58Schuyler County, ILIL6,6570.0%–

59Monroe County, ILIL34,8400.0%–

60Massac County, ILIL13,5020.0%–

61Perry County, ILIL20,1600.0%–

62Ogle County, ILIL51,3990.0%–

63Stephenson County, ILIL43,2200.0%–

64Effingham County, ILIL34,5190.0%–

65McDonough County, ILIL25,9160.0%–

66Logan County, ILIL27,1820.0%–

67Fulton County, ILIL32,9010.0%–

68Washington County, ILIL13,5640.0%–

69Warren County, ILIL16,2220.0%–

70Union County, ILIL16,6560.0%–

71Knox County, ILIL47,7670.0%–

72Marion County, ILIL36,3820.0%–

73Woodford County, ILIL38,1110.0%–

74Coles County, ILIL46,6070.0%–

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