RANKING · 2024 ACS · 100 SHOWN OF 100

Largest Scotch-Irish population, Illinois counties

Illinois counties ranked by the number of residents who are Scotch-Irish 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 100 counties in Illinois that qualify, ranked against each other statewide.

Scotch-Irish Americans: full group profile →

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 POPULATIONVS 2010

01Cook County, ILIL5,194,62513,501−59%

02DuPage County, ILIL934,2984,537−60%

03Lake County, ILIL719,3392,681−66%

04Kane County, ILIL525,7572,525−57%

05Will County, ILIL712,2532,480−68%

06Madison County, ILIL263,1102,389−47%

07McHenry County, ILIL317,7511,950−52%

08Sangamon County, ILIL194,1701,819−56%

09St. Clair County, ILIL250,7081,804−41%

10Winnebago County, ILIL283,6741,491−53%

11Champaign County, ILIL209,9721,429−51%

12Peoria County, ILIL178,5531,343−54%

13Tazewell County, ILIL130,0491,111−56%

14McLean County, ILIL171,4191,038−67%

15Rock Island County, ILIL141,869862−67%

16Macon County, ILIL99,300743−59%

17Knox County, ILIL47,767639−38%

18LaSalle County, ILIL107,773639−65%

19DeKalb County, ILIL101,835635−59%

20Jackson County, ILIL52,501634−45%

21Williamson County, ILIL67,225617−47%

22Randolph County, ILIL29,921572−25%

23Kendall County, ILIL145,470559−60%

24Jefferson County, ILIL36,147549−10%

25Clinton County, ILIL37,128470+39%

26Kankakee County, ILIL105,525402−69%

27Adams County, ILIL64,267397−70%

28Coles County, ILIL46,607378−62%

29Whiteside County, ILIL54,121361−47%

30Saline County, ILIL22,772353−44%

31Grundy County, ILIL54,052345−69%

32Vermilion County, ILIL71,259343−74%

33Effingham County, ILIL34,519337−47%

34Christian County, ILIL33,443325−55%

35Ogle County, ILIL51,399312−59%

36Henry County, ILIL48,095306−59%

37Franklin County, ILIL36,916304−72%

38Monroe County, ILIL34,840302−36%

39Crawford County, ILIL18,648295−4%

40Marion County, ILIL36,382293−59%

41Wayne County, ILIL15,882282+18%

42Piatt County, ILIL16,791281−54%

43Bond County, ILIL16,959277−16%

44Livingston County, ILIL35,057272−53%

45Macoupin County, ILIL43,748267−74%

46Woodford County, ILIL38,111251−66%

47Bureau County, ILIL32,510248−55%

48Fulton County, ILIL32,901247−50%

49Morgan County, ILIL32,515247−61%

50Stephenson County, ILIL43,220224−57%

51McDonough County, ILIL25,916190−76%

52Johnson County, ILIL13,363181−48%

53Perry County, ILIL20,160176−57%

54Mason County, ILIL12,411168−43%

55Warren County, ILIL16,222168−58%

56Mercer County, ILIL15,229163−25%

57Boone County, ILIL53,568157−70%

58Washington County, ILIL13,564146+7%

59Edgar County, ILIL16,323145−64%

60Logan County, ILIL27,182145−64%

61Union County, ILIL16,656144−32%

62Lee County, ILIL32,914141−70%

63Jo Daviess County, ILIL21,594135−33%

64Montgomery County, ILIL28,076130−74%

65Jersey County, ILIL21,160126+5%

66De Witt County, ILIL15,118124−62%

67Menard County, ILIL11,863121−55%

68Shelby County, ILIL20,576121−62%

69Iroquois County, ILIL26,150117−72%

70Hardin County, ILIL3,588116+23%

71Fayette County, ILIL20,790115−49%

72Massac County, ILIL13,502114−46%

73Hancock County, ILIL16,803110−63%

74Cumberland County, ILIL10,208109−37%

75Marshall County, ILIL11,473101−35%

76Scott County, ILIL4,86680−37%

77Stark County, ILIL5,31980−35%

78Clark County, ILIL15,11474−79%

79Clay County, ILIL12,79373−78%

80Douglas County, ILIL19,88072−82%

81White County, ILIL13,25070−73%

82Lawrence County, ILIL13,79062−63%

83Edwards County, ILIL5,89860−63%

84Greene County, ILIL11,31352−81%

85Moultrie County, ILIL14,37152−77%

86Ford County, ILIL13,21651−73%

87Wabash County, ILIL10,90750−78%

88Jasper County, ILIL9,03248−74%

89Putnam County, ILIL5,61947−48%

90Gallatin County, ILIL4,61637−54%

91Carroll County, ILIL15,41936−83%

92Henderson County, ILIL5,98436−83%

93Pike County, ILIL14,23135−81%

94Cass County, ILIL12,46329−85%

95Alexander County, ILIL4,57028−77%

96Calhoun County, ILIL4,30022−66%

97Richland County, ILIL15,21922−91%

98Pulaski County, ILIL4,82021−83%

99Hamilton County, ILIL7,85920−66%

100Pope County, ILIL3,67212−92%

SHOWING 1–100 OF 100

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES