RANKING · 2024 ACS · 75 SHOWN OF 75

Largest Croatian population, Illinois counties

Illinois counties ranked by the number of residents who are Croatian 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 75 counties in Illinois that qualify, ranked against each other statewide. The median across all 75 is 38. Biggest climber in the top 100 since 2020: Putnam County, IL, up 37 places to #35.

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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

RANKPLACESTATEPOPCROATIAN POPULATIONVS 2010

01Cook County, ILIL5,194,62515,378−18%

02▲1DuPage County, ILIL934,2984,554−8%

03▼1Will County, ILIL712,2534,455−31%

04Lake County, ILIL719,3391,717−37%

05▲1Madison County, ILIL263,1101,366−9%

06▼1Kane County, ILIL525,757851−26%

07McHenry County, ILIL317,751702−41%

08St. Clair County, ILIL250,708615+19%

09▲10Grundy County, ILIL54,052586+64%

10Kendall County, ILIL145,470438+25%

11▼2Peoria County, ILIL178,553368+29%

12▲3Winnebago County, ILIL283,674332−6%

13▲5Fulton County, ILIL32,901317−25%

14▼1McLean County, ILIL171,419308−13%

15▲7Tazewell County, ILIL130,049258−11%

16▼4Sangamon County, ILIL194,170241−50%

17▲4Rock Island County, ILIL141,869221−54%

18▼7Macoupin County, ILIL43,748201−44%

19▼5Kankakee County, ILIL105,525198+34%

20▼3LaSalle County, ILIL107,773196−43%

21▼1Champaign County, ILIL209,972178−2%

22▲11Franklin County, ILIL36,916143−7%

23▲1Monroe County, ILIL34,840133+432%

24▲3Williamson County, ILIL67,225119−11%

25▲7Macon County, ILIL99,3001140%

26▲18Montgomery County, ILIL28,076107+65%

27▼4Marshall County, ILIL11,47395+197%

28▲11Jo Daviess County, ILIL21,59482+1071%

29▼13DeKalb County, ILIL101,83573−68%

30▲34Union County, ILIL16,65664–

31▲11Richland County, ILIL15,21957–

32▲6Henry County, ILIL48,09555−14%

33▼8Knox County, ILIL47,76749−11%

34▲27Iroquois County, ILIL26,15048+12%

35▲37Putnam County, ILIL5,61948+586%

36▲19White County, ILIL13,25048–

37▲29Boone County, ILIL53,56842−45%

38▼1Jefferson County, ILIL36,14738+41%

39▲4Marion County, ILIL36,38237+270%

40▲1Henderson County, ILIL5,98431+288%

41▲11Crawford County, ILIL18,64830+400%

42▼16Jackson County, ILIL52,50129−6%

43▲13Whiteside County, ILIL54,12128−59%

44▲14Bureau County, ILIL32,51026+63%

45▼11Vermilion County, ILIL71,25925−72%

46▼11Coles County, ILIL46,60724+71%

47▼2Jersey County, ILIL21,16024−80%

48Fayette County, ILIL20,79023+188%

49▲2McDonough County, ILIL25,91623−8%

50▲29Perry County, ILIL20,16023−48%

51▲3Stephenson County, ILIL43,22022−61%

52▲22Saline County, ILIL22,77221–

53▲6Christian County, ILIL33,44321−54%

54▲16Effingham County, ILIL34,51920–

55▼2Douglas County, ILIL19,88019−24%

56▼25Logan County, ILIL27,18217+6%

57Piatt County, ILIL16,79116−82%

58▼8Clinton County, ILIL37,12814−39%

59▼23Mercer County, ILIL15,22914−53%

60▲13Mason County, ILIL12,41112+300%

61Menard County, ILIL11,86312−60%

62▲7Shelby County, ILIL20,57612+33%

63▲14Ford County, ILIL13,2167–

64▼16Ogle County, ILIL51,3997−67%

65Scott County, ILIL4,8667–

66▼20Carroll County, ILIL15,4196−81%

67▼4Gallatin County, ILIL4,61660%

68Stark County, ILIL5,3195−29%

69▼20Wayne County, ILIL15,88250%

70▼10Lee County, ILIL32,9144−94%

71▲4Cass County, ILIL12,46330%

72Calhoun County, ILIL4,3002–

73Warren County, ILIL16,2222−33%

74▼46Livingston County, ILIL35,0571−99%

75Washington County, ILIL13,5641−95%

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