RANKING · 2020 CENSUS · 102 SHOWN OF 102

Highest Scotch-Irish population share, Illinois counties · 2020

Illinois counties ranked by the share of all residents who are Scotch-Irish ancestry (2023 American Community Survey). A concentration measure: Scotch-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

RANKPLACESTATEPOPSCOTCH-IRISH SHAREVS 2000

01Mercer County, ILIL15,2292.1%–

02Hardin County, ILIL3,5882.1%–

03Schuyler County, ILIL6,6572.1%–

04Randolph County, ILIL29,9211.9%–

05Menard County, ILIL11,8631.6%–

06Wayne County, ILIL15,8821.6%–

07Mason County, ILIL12,4111.5%–

08De Witt County, ILIL15,1181.4%–

09Jackson County, ILIL52,5011.4%–

10Montgomery County, ILIL28,0761.4%–

11Alexander County, ILIL4,5701.4%–

12Stark County, ILIL5,3191.4%–

13Saline County, ILIL22,7721.4%–

14Bond County, ILIL16,9591.3%–

15Massac County, ILIL13,5021.3%–

16Franklin County, ILIL36,9161.3%–

17Williamson County, ILIL67,2251.2%–

18Knox County, ILIL47,7671.2%–

19Henry County, ILIL48,0951.2%–

20Warren County, ILIL16,2221.2%–

21White County, ILIL13,2501.2%–

22Washington County, ILIL13,5641.2%–

23Marion County, ILIL36,3821.2%–

24Piatt County, ILIL16,7911.2%–

25Edgar County, ILIL16,3231.1%–

26Henderson County, ILIL5,9841.1%–

27Brown County, ILIL6,4011.1%–

28Adams County, ILIL64,2671.1%–

29Macon County, ILIL99,3001.1%–

30LaSalle County, ILIL107,7731.1%–

31Pope County, ILIL3,6721.1%–

32Sangamon County, ILIL194,1701.1%–

33Grundy County, ILIL54,0521.0%–

34Effingham County, ILIL34,5191.0%–

35Logan County, ILIL27,1821.0%–

36Livingston County, ILIL35,0571.0%–

37Iroquois County, ILIL26,1501.0%–

38Gallatin County, ILIL4,6161.0%–

39Tazewell County, ILIL130,0491.0%–

40Jefferson County, ILIL36,1471.0%–

41Crawford County, ILIL18,6481.0%–

42Lee County, ILIL32,9140.9%–

43Coles County, ILIL46,6070.9%–

44Madison County, ILIL263,1100.9%–

45Edwards County, ILIL5,8980.9%–

46Morgan County, ILIL32,5150.9%–

47Pike County, ILIL14,2310.9%–

48Woodford County, ILIL38,1110.9%–

49Hancock County, ILIL16,8030.9%–

50Champaign County, ILIL209,9720.9%–

51McHenry County, ILIL317,7510.9%–

52Cumberland County, ILIL10,2080.9%–

53Ford County, ILIL13,2160.9%–

54Peoria County, ILIL178,5530.8%–

55Clay County, ILIL12,7930.8%–

56Whiteside County, ILIL54,1210.8%–

57Clinton County, ILIL37,1280.8%–

58Fayette County, ILIL20,7900.8%–

59Moultrie County, ILIL14,3710.8%–

60Monroe County, ILIL34,8400.8%–

61Christian County, ILIL33,4430.8%–

62McDonough County, ILIL25,9160.8%–

63Shelby County, ILIL20,5760.8%–

64Jersey County, ILIL21,1600.8%–

65Greene County, ILIL11,3130.8%–

66Rock Island County, ILIL141,8690.8%–

67Perry County, ILIL20,1600.7%–

68Macoupin County, ILIL43,7480.7%–

69Ogle County, ILIL51,3990.7%–

70Scott County, ILIL4,8660.7%–

71Fulton County, ILIL32,9010.7%–

72Wabash County, ILIL10,9070.7%–

73Kankakee County, ILIL105,5250.7%–

74Bureau County, ILIL32,5100.7%–

75Jo Daviess County, ILIL21,5940.7%–

76McLean County, ILIL171,4190.7%–

77Jasper County, ILIL9,0320.6%–

78Union County, ILIL16,6560.6%–

79St. Clair County, ILIL250,7080.6%–

80Winnebago County, ILIL283,6740.6%–

81Douglas County, ILIL19,8800.6%–

82Marshall County, ILIL11,4730.6%–

83DeKalb County, ILIL101,8350.6%–

84Clark County, ILIL15,1140.6%–

85Kendall County, ILIL145,4700.5%–

86Vermilion County, ILIL71,2590.5%–

87Lawrence County, ILIL13,7900.5%–

88Stephenson County, ILIL43,2200.5%–

89Boone County, ILIL53,5680.5%–

90Lake County, ILIL719,3390.5%–

91Kane County, ILIL525,7570.5%–

92Pulaski County, ILIL4,8200.5%–

93DuPage County, ILIL934,2980.5%–

94Will County, ILIL712,2530.5%–

95Putnam County, ILIL5,6190.4%–

96Calhoun County, ILIL4,3000.4%–

97Hamilton County, ILIL7,8590.4%–

98Cass County, ILIL12,4630.3%–

99Johnson County, ILIL13,3630.3%–

100Cook County, ILIL5,194,6250.3%–

101Richland County, ILIL15,2190.3%–

102Carroll County, ILIL15,4190.2%–

SHOWING 1–102 OF 102

Download CSV (full list, 102 rows)

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