RANKING · 2024 ACS · 74 SHOWN OF 74

Largest Slovak population, Illinois counties

Illinois counties ranked by the number of residents who are Slovak ancestry, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 74 counties in Illinois that qualify, ranked against each other statewide. The median across all 74 is 30. Biggest climber in the top 100 since 2020: Menard County, IL, up 31 places to #32.

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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

RANKPLACESTATEPOPSLOVAK POPULATIONVS 2010

01Cook County, ILIL5,194,62511,063−24%

02▲1Will County, ILIL712,2533,952−32%

03▼1DuPage County, ILIL934,2983,933−25%

04▲1LaSalle County, ILIL107,7731,553−51%

05▼1Lake County, ILIL719,3391,525−35%

06Kane County, ILIL525,7571,175−19%

07▲1Madison County, ILIL263,110795+11%

08▲1Sangamon County, ILIL194,170718+1%

09▼2McHenry County, ILIL317,751650−13%

10▲3Grundy County, ILIL54,052422+6%

11▲7DeKalb County, ILIL101,835389+50%

12Livingston County, ILIL35,057329−38%

13▲4St. Clair County, ILIL250,708315−19%

14▼4Kendall County, ILIL145,470313−32%

15▼1McLean County, ILIL171,419280−54%

16▼1Winnebago County, ILIL283,674239−5%

17▲2Peoria County, ILIL178,553177−58%

18▲14Christian County, ILIL33,443163+55%

19▼8Champaign County, ILIL209,972147−60%

20▲9Vermilion County, ILIL71,259141−34%

21▼1Kankakee County, ILIL105,525136−49%

22▼6Macoupin County, ILIL43,748131−67%

23▼2Tazewell County, ILIL130,049121−18%

24▲13Rock Island County, ILIL141,869120−29%

25▲9Macon County, ILIL99,300119+18%

26▼1Henry County, ILIL48,09575+150%

27▼3Bureau County, ILIL32,51070−29%

28▲24Adams County, ILIL64,26769−28%

29▼3Marshall County, ILIL11,47363−45%

30▲17Williamson County, ILIL67,22545−35%

31▼9Montgomery County, ILIL28,07642−57%

32▲31Menard County, ILIL11,86339+44%

33▲20Piatt County, ILIL16,79139+680%

34▲8Pike County, ILIL14,23135–

35▲19Boone County, ILIL53,56834+13%

36▼6Jo Daviess County, ILIL21,59433+175%

37▲14Clinton County, ILIL37,12830+275%

38▲10Franklin County, ILIL36,91628−53%

39▼4Jackson County, ILIL52,50127−16%

40▲9Shelby County, ILIL20,57627−23%

41▲20Crawford County, ILIL18,64822−4%

42▲3Mercer County, ILIL15,22922−49%

43▲17Ford County, ILIL13,21620−39%

44Richland County, ILIL15,21920−39%

45▼9Jefferson County, ILIL36,14719+850%

46▼6Iroquois County, ILIL26,15018−28%

47Pulaski County, ILIL4,82018–

48▼4Putnam County, ILIL5,61918−81%

49▼22Morgan County, ILIL32,51516+100%

50▼7Lee County, ILIL32,91415−77%

51▼1Carroll County, ILIL15,41914+367%

52▼24Monroe County, ILIL34,84014−59%

53Bond County, ILIL16,95914+75%

54▼23Ogle County, ILIL51,39914−89%

55▼14Hamilton County, ILIL7,85912–

56▲2Stephenson County, ILIL43,22011−80%

57White County, ILIL13,2508−27%

58▼3Effingham County, ILIL34,5197−61%

59▲10Moultrie County, ILIL14,3717+250%

60▲6Perry County, ILIL20,1607−46%

61▲4Clay County, ILIL12,7936–

62Mason County, ILIL12,4116–

63Fulton County, ILIL32,9015−38%

64▼8Knox County, ILIL47,7675−75%

65▼8Logan County, ILIL27,1825−44%

66McDonough County, ILIL25,9165−88%

67Massac County, ILIL13,5025−75%

68Schuyler County, ILIL6,6573−83%

69▼5Marion County, ILIL36,3822−85%

70▼3Union County, ILIL16,6562−86%

71Warren County, ILIL16,2222−94%

72Washington County, ILIL13,5642−33%

73▼11Coles County, ILIL46,6071−99%

74▼51Woodford County, ILIL38,1111−99%

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