RANKING · 2024 ACS · 100 SHOWN OF 100

Highest Scotch-Irish population share, Illinois counties

Illinois counties ranked by the share of all residents who are Scotch-Irish ancestry (2024 American Community Survey). A concentration measure: Scotch-Irish residents as a percentage of total population. This list covers the 100 counties in Illinois that qualify, ranked against each other statewide. The median across all 100 is 0.7%. Biggest climber in the top 100 since 2020: Johnson County, IL, up 88 places to #11.

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IllinoisAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPSCOTCH-IRISH SHAREVS 2010

01▲1Hardin County, ILIL3,5883.2%+1.1 pts

02▲2Randolph County, ILIL29,9211.9%−0.4 pts

03▲3Wayne County, ILIL15,8821.8%+0.3 pts

04▲20Piatt County, ILIL16,7911.7%−2.0 pts

05▲9Bond County, ILIL16,9591.7%−0.2 pts

06▲64Scott County, ILIL4,8661.6%−0.7 pts

07▲34Crawford County, ILIL18,6481.6%+0.1 pts

08▲5Saline County, ILIL22,7721.5%−1.0 pts

09▲3Stark County, ILIL5,3191.5%−0.5 pts

10▲30Jefferson County, ILIL36,1471.5%0.0 pts

11▲88Johnson County, ILIL13,3631.4%−1.4 pts

12▼5Mason County, ILIL12,4111.3%−0.6 pts

13▲5Knox County, ILIL47,7671.3%−0.7 pts

14▲43Clinton County, ILIL37,1281.3%+0.4 pts

15▼6Jackson County, ILIL52,5011.2%−0.7 pts

16▲6Washington County, ILIL13,5641.1%+0.1 pts

17▲35Cumberland County, ILIL10,2081.1%−0.5 pts

18▼17Mercer County, ILIL15,2291.1%−0.3 pts

19▲1Warren County, ILIL16,2221.0%−1.2 pts

20▼15Menard County, ILIL11,8631.0%−1.1 pts

21▲24Edwards County, ILIL5,8981.0%−1.4 pts

22▲12Effingham County, ILIL34,5191.0%−0.9 pts

23▲38Christian County, ILIL33,4431.0%−1.1 pts

24▲8Sangamon County, ILIL194,1700.9%−1.2 pts

25▼8Williamson County, ILIL67,2250.9%−0.8 pts

26▲18Madison County, ILIL263,1100.9%−0.8 pts

27▼2Edgar County, ILIL16,3230.9%−1.3 pts

28▲54Marshall County, ILIL11,4730.9%−0.4 pts

29▲31Monroe County, ILIL34,8400.9%−0.6 pts

30▲37Perry County, ILIL20,1600.9%−1.0 pts

31▲8Tazewell County, ILIL130,0490.9%−1.0 pts

32▲46Union County, ILIL16,6560.8%−0.3 pts

33▲62Putnam County, ILIL5,6190.8%−0.7 pts

34▼19Massac County, ILIL13,5020.8%−0.5 pts

35▼19Franklin County, ILIL36,9160.8%−2.0 pts

36▲7Coles County, ILIL46,6070.8%−1.1 pts

37▼29De Witt County, ILIL15,1180.8%−1.2 pts

38▼15Marion County, ILIL36,3820.8%−1.0 pts

39▼1Gallatin County, ILIL4,6160.8%−0.6 pts

40▼4Livingston County, ILIL35,0570.8%−0.7 pts

41▲33Bureau County, ILIL32,5100.8%−0.8 pts

42▲29Fulton County, ILIL32,9010.7%−0.6 pts

43▲3Morgan County, ILIL32,5150.7%−1.0 pts

44▲10Peoria County, ILIL178,5530.7%−0.8 pts

45▼16Macon County, ILIL99,3000.7%−0.9 pts

46▲33St. Clair County, ILIL250,7080.7%−0.4 pts

47▲15McDonough County, ILIL25,9160.7%−1.7 pts

48▲2Champaign County, ILIL209,9720.7%−0.8 pts

49▲7Whiteside County, ILIL54,1210.7%−0.5 pts

50▼2Woodford County, ILIL38,1110.7%−1.3 pts

51▼18Grundy County, ILIL54,0520.6%−1.7 pts

52▼3Hancock County, ILIL16,8030.6%−0.9 pts

53▲30DeKalb County, ILIL101,8350.6%−0.8 pts

54▼35Henry County, ILIL48,0950.6%−0.8 pts

55▼4McHenry County, ILIL317,7510.6%−0.7 pts

56▲19Jo Daviess County, ILIL21,5940.6%−0.3 pts

57▼29Adams County, ILIL64,2670.6%−1.4 pts

58▲11Ogle County, ILIL51,3990.6%−0.8 pts

59▲17McLean County, ILIL171,4190.6%−1.3 pts

60▲6Rock Island County, ILIL141,8690.6%−1.1 pts

61▲7Macoupin County, ILIL43,7480.6%−1.5 pts

62▲2Jersey County, ILIL21,1600.6%+0.1 pts

63▼33LaSalle County, ILIL107,7730.6%−1.0 pts

64▼1Shelby County, ILIL20,5760.6%−0.8 pts

65▼39Henderson County, ILIL5,9840.6%−2.2 pts

66▼55Alexander County, ILIL4,5700.6%−0.9 pts

67▼12Clay County, ILIL12,7930.6%−1.9 pts

68▼10Fayette County, ILIL20,7900.5%−0.5 pts

69▲11Winnebago County, ILIL283,6740.5%−0.6 pts

70▼35Logan County, ILIL27,1820.5%−0.8 pts

71▲6Jasper County, ILIL9,0320.5%−1.4 pts

72▼51White County, ILIL13,2500.5%−1.2 pts

73▲15Stephenson County, ILIL43,2200.5%−0.6 pts

74▲22Calhoun County, ILIL4,3000.5%−0.7 pts

75▲16Kane County, ILIL525,7570.5%−0.7 pts

76▲17DuPage County, ILIL934,2980.5%−0.7 pts

77▲7Clark County, ILIL15,1140.5%−1.6 pts

78▲8Vermilion County, ILIL71,2590.5%−1.1 pts

79▼69Montgomery County, ILIL28,0760.5%−1.2 pts

80▼8Wabash County, ILIL10,9070.4%−1.5 pts

81▼16Greene County, ILIL11,3130.4%−1.6 pts

82▼45Iroquois County, ILIL26,1500.4%−1.0 pts

83▲9Pulaski County, ILIL4,8200.4%−1.6 pts

84▼42Lee County, ILIL32,9140.4%−0.9 pts

85▲2Lawrence County, ILIL13,7900.4%−0.6 pts

86▼1Kendall County, ILIL145,4700.4%−0.9 pts

87▼34Ford County, ILIL13,2160.4%−1.0 pts

88▼15Kankakee County, ILIL105,5250.4%−0.8 pts

89▲1Lake County, ILIL719,3390.4%−0.8 pts

90▼9Douglas County, ILIL19,8800.4%−1.6 pts

91▼32Moultrie County, ILIL14,3710.4%−1.2 pts

92▲2Will County, ILIL712,2530.4%−0.8 pts

93▼62Pope County, ILIL3,6720.3%−3.2 pts

94▼5Boone County, ILIL53,5680.3%−0.7 pts

95▲5Cook County, ILIL5,194,6250.3%−0.4 pts

96▲1Hamilton County, ILIL7,8590.3%−0.4 pts

97▼50Pike County, ILIL14,2310.2%−0.9 pts

98▲4Carroll County, ILIL15,4190.2%−1.1 pts

99▼1Cass County, ILIL12,4630.2%−1.2 pts

100▲1Richland County, ILIL15,2190.1%−1.4 pts

SHOWING 1–100 OF 100

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