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 (2023 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.

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

RANKPLACESTATEPOPIRISH SHAREVS 2000

01Jo Daviess County, ILIL21,59418.8%–

02Gallatin County, ILIL4,61618.4%–

03Saline County, ILIL22,77217.2%–

04LaSalle County, ILIL107,77316.1%–

05McHenry County, ILIL317,75115.8%–

06Marshall County, ILIL11,47315.4%–

07Lee County, ILIL32,91415.3%–

08DeKalb County, ILIL101,83515.2%–

09Pope County, ILIL3,67214.7%–

10McLean County, ILIL171,41914.4%–

11Grundy County, ILIL54,05214.4%–

12Livingston County, ILIL35,05714.2%–

13Scott County, ILIL4,86614.2%–

14Coles County, ILIL46,60714.2%–

15Piatt County, ILIL16,79113.8%–

16Henderson County, ILIL5,98413.8%–

17Schuyler County, ILIL6,65713.8%–

18Knox County, ILIL47,76713.7%–

19Whiteside County, ILIL54,12113.7%–

20White County, ILIL13,25013.7%–

21Ogle County, ILIL51,39913.7%–

22Hamilton County, ILIL7,85913.6%–

23Edgar County, ILIL16,32313.6%–

24Williamson County, ILIL67,22513.6%–

25Bureau County, ILIL32,51013.6%–

26Macoupin County, ILIL43,74813.5%–

27Madison County, ILIL263,11013.3%–

28Iroquois County, ILIL26,15013.3%–

29Jersey County, ILIL21,16013.2%–

30Monroe County, ILIL34,84013.2%–

31Clark County, ILIL15,11413.2%–

32Logan County, ILIL27,18213.0%–

33DuPage County, ILIL934,29813.0%–

34Clay County, ILIL12,79313.0%–

35Tazewell County, ILIL130,04913.0%–

36Washington County, ILIL13,56413.0%–

37Stephenson County, ILIL43,22013.0%–

38Bond County, ILIL16,95912.9%–

39Massac County, ILIL13,50212.9%–

40Will County, ILIL712,25312.9%–

41Montgomery County, ILIL28,07612.9%–

42Warren County, ILIL16,22212.9%–

43Carroll County, ILIL15,41912.9%–

44Putnam County, ILIL5,61912.8%–

45Morgan County, ILIL32,51512.8%–

46Boone County, ILIL53,56812.6%–

47Stark County, ILIL5,31912.6%–

48Hancock County, ILIL16,80312.6%–

49Hardin County, ILIL3,58812.5%–

50Sangamon County, ILIL194,17012.4%–

51Marion County, ILIL36,38212.3%–

52Greene County, ILIL11,31312.3%–

53Mason County, ILIL12,41112.2%–

54Henry County, ILIL48,09512.2%–

55Mercer County, ILIL15,22912.2%–

56McDonough County, ILIL25,91612.2%–

57Peoria County, ILIL178,55312.1%–

58Kendall County, ILIL145,47011.9%–

59Winnebago County, ILIL283,67411.8%–

60Franklin County, ILIL36,91611.8%–

61Ford County, ILIL13,21611.8%–

62Woodford County, ILIL38,11111.6%–

63Wabash County, ILIL10,90711.5%–

64Randolph County, ILIL29,92111.3%–

65De Witt County, ILIL15,11811.3%–

66Kankakee County, ILIL105,52511.3%–

67Jasper County, ILIL9,03211.1%–

68Cumberland County, ILIL10,20811.0%–

69Menard County, ILIL11,86311.0%–

70Richland County, ILIL15,21910.8%–

71Moultrie County, ILIL14,37110.8%–

72Kane County, ILIL525,75710.7%–

73Christian County, ILIL33,44310.7%–

74Rock Island County, ILIL141,86910.6%–

75Jefferson County, ILIL36,14710.6%–

76Fulton County, ILIL32,90110.6%–

77Johnson County, ILIL13,36310.4%–

78Macon County, ILIL99,30010.4%–

79Jackson County, ILIL52,50110.3%–

80Pike County, ILIL14,23110.2%–

81Perry County, ILIL20,16010.2%–

82Lake County, ILIL719,33910.0%–

83Adams County, ILIL64,26710.0%–

84Fayette County, ILIL20,7909.9%–

85St. Clair County, ILIL250,7089.7%–

86Crawford County, ILIL18,6489.5%–

87Wayne County, ILIL15,8829.4%–

88Pulaski County, ILIL4,8209.2%–

89Lawrence County, ILIL13,7909.1%–

90Shelby County, ILIL20,5769.0%–

91Champaign County, ILIL209,9729.0%–

92Brown County, ILIL6,4018.8%–

93Union County, ILIL16,6568.7%–

94Calhoun County, ILIL4,3008.7%–

95Effingham County, ILIL34,5198.5%–

96Cass County, ILIL12,4638.5%–

97Cook County, ILIL5,194,6258.4%–

98Edwards County, ILIL5,8988.2%–

99Vermilion County, ILIL71,2598.0%–

100Douglas County, ILIL19,8807.4%–

101Alexander County, ILIL4,5707.0%–

102Clinton County, ILIL37,1286.5%–

SHOWING 1–102 OF 102

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