RANKING · 2010 CENSUS · 81 SHOWN OF 81

Largest Slovak population, Illinois counties · 2010

Illinois counties ranked by the number of residents who are Slovak ancestry, from the 2023 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. 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 POPULATIONVS 2000

01Cook County, ILIL5,194,62514,558–

02Will County, ILIL712,2535,803–

03DuPage County, ILIL934,2985,262–

04LaSalle County, ILIL107,7733,186–

05Lake County, ILIL719,3392,335–

06Kane County, ILIL525,7571,459–

07McHenry County, ILIL317,751745–

08Madison County, ILIL263,110715–

09Sangamon County, ILIL194,170712–

10McLean County, ILIL171,419611–

11Livingston County, ILIL35,057534–

12Kendall County, ILIL145,470461–

13Peoria County, ILIL178,553425–

14Grundy County, ILIL54,052397–

15Macoupin County, ILIL43,748396–

16St. Clair County, ILIL250,708389–

17Champaign County, ILIL209,972366–

18Kankakee County, ILIL105,525266–

19DeKalb County, ILIL101,835260–

20Winnebago County, ILIL283,674251–

21Vermilion County, ILIL71,259214–

22Rock Island County, ILIL141,869169–

23Tazewell County, ILIL130,049148–

24Ogle County, ILIL51,399131–

25Marshall County, ILIL11,473114–

26Christian County, ILIL33,443105–

27Macon County, ILIL99,300101–

28Bureau County, ILIL32,51098–

29Montgomery County, ILIL28,07698–

30Adams County, ILIL64,26796–

31Putnam County, ILIL5,61995–

32Woodford County, ILIL38,11190–

33Williamson County, ILIL67,22569–

34Coles County, ILIL46,60768–

35Lee County, ILIL32,91465–

36Jersey County, ILIL21,16063–

37Randolph County, ILIL29,92161–

38Franklin County, ILIL36,91660–

39Whiteside County, ILIL54,12156–

40Stephenson County, ILIL43,22054–

41Mercer County, ILIL15,22943–

42Clark County, ILIL15,11441–

43McDonough County, ILIL25,91640–

44Cass County, ILIL12,46339–

45Shelby County, ILIL20,57635–

46Monroe County, ILIL34,84034–

47Ford County, ILIL13,21633–

48Richland County, ILIL15,21933–

49Jackson County, ILIL52,50132–

50Warren County, ILIL16,22231–

51Boone County, ILIL53,56830–

52Henry County, ILIL48,09530–

53Johnson County, ILIL13,36328–

54Fayette County, ILIL20,79027–

55Menard County, ILIL11,86327–

56Iroquois County, ILIL26,15025–

57Crawford County, ILIL18,64823–

58Hancock County, ILIL16,80323–

59Knox County, ILIL47,76720–

60Massac County, ILIL13,50220–

61Effingham County, ILIL34,51918–

62Schuyler County, ILIL6,65718–

63Stark County, ILIL5,31914–

64Union County, ILIL16,65614–

65Marion County, ILIL36,38213–

66Perry County, ILIL20,16013–

67Jo Daviess County, ILIL21,59412–

68White County, ILIL13,25011–

69Edgar County, ILIL16,32310–

70Edwards County, ILIL5,8989–

71Logan County, ILIL27,1829–

72Bond County, ILIL16,9598–

73Clinton County, ILIL37,1288–

74Fulton County, ILIL32,9018–

75Morgan County, ILIL32,5158–

76Brown County, ILIL6,4015–

77Piatt County, ILIL16,7915–

78Carroll County, ILIL15,4193–

79Washington County, ILIL13,5643–

80Jefferson County, ILIL36,1472–

81Moultrie County, ILIL14,3712–

SHOWING 1–81 OF 81

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