RANKING · 2024 ACS · 102 SHOWN OF 102

Highest Irish population share, Illinois counties

Illinois counties ranked by the share of all residents who are Irish ancestry (2024 American Community Survey). A concentration measure: Irish residents as a percentage of total population. This list covers the 102 counties in Illinois that qualify, ranked against each other statewide. The median across all 102 is 12.3%. Biggest climber in the top 100 since 2020: Pope County, IL, up 72 places to #9.

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IllinoisAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPIRISH SHAREVS 2010

01▲4Jo Daviess County, ILIL21,59418.8%−0.9 pts

02▼1Gallatin County, ILIL4,61618.4%−4.5 pts

03▲8Saline County, ILIL22,77217.2%−0.6 pts

04▼1LaSalle County, ILIL107,77316.1%−2.9 pts

05▲1McHenry County, ILIL317,75115.8%−2.9 pts

06▲1Marshall County, ILIL11,47315.4%−1.3 pts

07▲2Lee County, ILIL32,91415.3%−3.4 pts

08▲7DeKalb County, ILIL101,83515.2%−2.3 pts

09▲72Pope County, ILIL3,67214.7%−4.5 pts

10▲7McLean County, ILIL171,41914.4%−1.0 pts

11▼9Grundy County, ILIL54,05214.4%−8.6 pts

12▼8Livingston County, ILIL35,05714.2%−3.0 pts

13▲48Scott County, ILIL4,86614.2%−2.0 pts

14▲21Coles County, ILIL46,60714.2%−2.2 pts

15▼5Piatt County, ILIL16,79113.8%+0.4 pts

16▲39Henderson County, ILIL5,98413.8%−0.7 pts

17▲30Schuyler County, ILIL6,65713.8%+1.8 pts

18▼4Knox County, ILIL47,76713.7%−1.1 pts

19▲18Whiteside County, ILIL54,12113.7%−1.8 pts

20▼1White County, ILIL13,25013.7%−2.1 pts

21▲3Ogle County, ILIL51,39913.7%−1.6 pts

22▲8Hamilton County, ILIL7,85913.6%−7.0 pts

23▼3Edgar County, ILIL16,32313.6%−1.6 pts

24▲19Williamson County, ILIL67,22513.6%−3.7 pts

25▲11Bureau County, ILIL32,51013.6%−0.2 pts

26▲30Macoupin County, ILIL43,74813.5%−2.7 pts

27▲5Madison County, ILIL263,11013.3%−1.5 pts

28▼16Iroquois County, ILIL26,15013.3%−0.8 pts

29▲5Jersey County, ILIL21,16013.2%−1.4 pts

30▲24Monroe County, ILIL34,84013.2%−3.3 pts

31Clark County, ILIL15,11413.2%−1.1 pts

32▼16Logan County, ILIL27,18213.0%−0.1 pts

33▼10DuPage County, ILIL934,29813.0%−3.5 pts

34▲24Clay County, ILIL12,79313.0%+0.5 pts

35▲11Tazewell County, ILIL130,04913.0%−1.3 pts

36▲48Washington County, ILIL13,56413.0%−0.1 pts

37▲38Stephenson County, ILIL43,22013.0%+0.5 pts

38▼11Bond County, ILIL16,95912.9%+2.8 pts

39▲25Massac County, ILIL13,50212.9%−3.2 pts

40▼22Will County, ILIL712,25312.9%−5.7 pts

41▲35Montgomery County, ILIL28,07612.9%+1.7 pts

42▼9Warren County, ILIL16,22212.9%−1.8 pts

43▼4Carroll County, ILIL15,41912.9%−1.1 pts

44▲19Putnam County, ILIL5,61912.8%−3.9 pts

45▲17Morgan County, ILIL32,51512.8%−2.6 pts

46▲7Boone County, ILIL53,56812.6%−1.1 pts

47▼39Stark County, ILIL5,31912.6%−2.9 pts

48▲37Hancock County, ILIL16,80312.6%+0.5 pts

49▼24Hardin County, ILIL3,58812.5%−14.0 pts

50▼10Sangamon County, ILIL194,17012.4%−2.4 pts

51▼6Marion County, ILIL36,38212.3%−3.5 pts

52▲21Greene County, ILIL11,31312.3%−2.5 pts

53▼40Mason County, ILIL12,41112.2%+1.9 pts

54▼25Henry County, ILIL48,09512.2%−2.4 pts

55▲5Mercer County, ILIL15,22912.2%−6.0 pts

56▼5McDonough County, ILIL25,91612.2%−1.5 pts

57▼8Peoria County, ILIL178,55312.1%−2.7 pts

58▼36Kendall County, ILIL145,47011.9%−4.1 pts

59▼9Winnebago County, ILIL283,67411.8%−1.7 pts

60▼19Franklin County, ILIL36,91611.8%−6.9 pts

61▼33Ford County, ILIL13,21611.8%−3.7 pts

62▼3Woodford County, ILIL38,11111.6%−2.6 pts

63▲5Wabash County, ILIL10,90711.5%+3.2 pts

64▲27Randolph County, ILIL29,92111.3%0.0 pts

65▼39De Witt County, ILIL15,11811.3%−1.1 pts

66▼28Kankakee County, ILIL105,52511.3%−3.0 pts

67▲12Jasper County, ILIL9,03211.1%+0.1 pts

68▲15Cumberland County, ILIL10,20811.0%−0.7 pts

69▼48Menard County, ILIL11,86311.0%−4.6 pts

70▼22Richland County, ILIL15,21910.8%+1.6 pts

71▲19Moultrie County, ILIL14,37110.8%−1.2 pts

72▼7Kane County, ILIL525,75710.7%−2.4 pts

73▲9Christian County, ILIL33,44310.7%−2.1 pts

74▼30Rock Island County, ILIL141,86910.6%−3.6 pts

75▼18Jefferson County, ILIL36,14710.6%−5.2 pts

76▼9Fulton County, ILIL32,90110.6%−2.6 pts

77▲18Johnson County, ILIL13,36310.4%−1.1 pts

78▼36Macon County, ILIL99,30010.4%−2.5 pts

79▼10Jackson County, ILIL52,50110.3%−4.2 pts

80▲14Pike County, ILIL14,23110.2%−3.2 pts

81▲17Perry County, ILIL20,16010.2%−4.2 pts

82▼12Lake County, ILIL719,33910.0%−2.9 pts

83▼17Adams County, ILIL64,26710.0%−3.1 pts

84▲12Fayette County, ILIL20,7909.9%+0.6 pts

85▲3St. Clair County, ILIL250,7089.7%−1.4 pts

86▼34Crawford County, ILIL18,6489.5%−2.8 pts

87▼15Wayne County, ILIL15,8829.4%−0.5 pts

88▲12Pulaski County, ILIL4,8209.2%+2.4 pts

89▼2Lawrence County, ILIL13,7909.1%−0.4 pts

90▲11Shelby County, ILIL20,5769.0%+0.2 pts

91▼20Champaign County, ILIL209,9729.0%−3.2 pts

92▼6Brown County, ILIL6,4018.8%−3.9 pts

93▼1Union County, ILIL16,6568.7%−3.8 pts

94▲5Calhoun County, ILIL4,3008.7%−3.8 pts

95▼17Effingham County, ILIL34,5198.5%−1.4 pts

96▼19Cass County, ILIL12,4638.5%−2.1 pts

97▼4Cook County, ILIL5,194,6258.4%−1.8 pts

98▼9Edwards County, ILIL5,8988.2%−0.3 pts

99▼19Vermilion County, ILIL71,2598.0%−2.1 pts

100▼26Douglas County, ILIL19,8807.4%−3.2 pts

101▲1Alexander County, ILIL4,5707.0%+0.1 pts

102▼5Clinton County, ILIL37,1286.5%−3.2 pts

SHOWING 1–102 OF 102

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