RANKING · 2020 CENSUS · 102 SHOWN OF 102

Largest Scotch-Irish population, Illinois counties · 2020

Illinois counties ranked by the number of residents who are Scotch-Irish ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 102 counties in Illinois that qualify, ranked against each other statewide.

Scotch-Irish Americans: full group profile →

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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, ILIL5,194,62515,225−54%

02DuPage County, ILIL934,2984,604−59%

03Lake County, ILIL719,3393,514−56%

04Will County, ILIL712,2533,205−59%

05Kane County, ILIL525,7572,660−55%

06McHenry County, ILIL317,7512,641−35%

07Madison County, ILIL263,1102,382−47%

08Sangamon County, ILIL194,1702,059−50%

09Champaign County, ILIL209,9721,806−38%

10Winnebago County, ILIL283,6741,652−48%

11St. Clair County, ILIL250,7081,586−48%

12Peoria County, ILIL178,5531,504−48%

13Tazewell County, ILIL130,0491,264−50%

14LaSalle County, ILIL107,7731,179−35%

15McLean County, ILIL171,4191,143−64%

16Macon County, ILIL99,3001,139−37%

17Rock Island County, ILIL141,8691,076−58%

18Williamson County, ILIL67,225832−28%

19Jackson County, ILIL52,501824−29%

20Kankakee County, ILIL105,525772−41%

21Adams County, ILIL64,267717−46%

22Kendall County, ILIL145,470690−50%

23Randolph County, ILIL29,921618−19%

24Knox County, ILIL47,767617−41%

25DeKalb County, ILIL101,835596−61%

26Henry County, ILIL48,095595−20%

27Grundy County, ILIL54,052530−53%

28Franklin County, ILIL36,916496−55%

29Coles County, ILIL46,607464−54%

30Whiteside County, ILIL54,121453−33%

31Marion County, ILIL36,382435−40%

32Vermilion County, ILIL71,259414−68%

33Montgomery County, ILIL28,076402−21%

34Ogle County, ILIL51,399371−51%

35Jefferson County, ILIL36,147360−41%

36Effingham County, ILIL34,519356−44%

37Livingston County, ILIL35,057354−38%

38Woodford County, ILIL38,111336−55%

39Macoupin County, ILIL43,748332−67%

40Mercer County, ILIL15,229329+52%

41Saline County, ILIL22,772325−49%

42Lee County, ILIL32,914314−34%

43Morgan County, ILIL32,515301−53%

44Clinton County, ILIL37,128301−11%

45Logan County, ILIL27,182288−29%

46Boone County, ILIL53,568275−48%

47Monroe County, ILIL34,840269−43%

48Iroquois County, ILIL26,150266−37%

49Wayne County, ILIL15,882257+8%

50Christian County, ILIL33,443253−65%

51Fulton County, ILIL32,901250−49%

52Stephenson County, ILIL43,220234−56%

53McDonough County, ILIL25,916232−71%

54De Witt County, ILIL15,118228−30%

55Bureau County, ILIL32,510227−59%

56Bond County, ILIL16,959219−34%

57Warren County, ILIL16,222206−49%

58Mason County, ILIL12,411204−30%

59Menard County, ILIL11,863197−26%

60Edgar County, ILIL16,323195−51%

61Piatt County, ILIL16,791189−69%

62Massac County, ILIL13,502185−12%

63Crawford County, ILIL18,648179−42%

64Fayette County, ILIL20,790170−24%

65Jersey County, ILIL21,160166+38%

66White County, ILIL13,250166−35%

67Shelby County, ILIL20,576165−48%

68Washington County, ILIL13,564164+20%

69Perry County, ILIL20,160158−61%

70Hancock County, ILIL16,803154−49%

71Jo Daviess County, ILIL21,594147−27%

72Schuyler County, ILIL6,657142+5%

73Pike County, ILIL14,231136−28%

74Moultrie County, ILIL14,371114−50%

75Douglas County, ILIL19,880113−71%

76Ford County, ILIL13,216112−41%

77Clay County, ILIL12,793109−68%

78Union County, ILIL16,656107−50%

79Greene County, ILIL11,31399−65%

80Cumberland County, ILIL10,20892−47%

81Clark County, ILIL15,11488−75%

82Alexander County, ILIL4,57084−31%

83Lawrence County, ILIL13,79084−50%

84Wabash County, ILIL10,90782−65%

85Hardin County, ILIL3,58881−14%

86Henderson County, ILIL5,98476−64%

87Stark County, ILIL5,31974−40%

88Brown County, ILIL6,40173−54%

89Marshall County, ILIL11,47366−58%

90Jasper County, ILIL9,03262−67%

91Edwards County, ILIL5,89857−65%

92Gallatin County, ILIL4,61648−41%

93Pope County, ILIL3,67244−72%

94Johnson County, ILIL13,36343−88%

95Richland County, ILIL15,21943−83%

96Cass County, ILIL12,46343−78%

97Scott County, ILIL4,86636−72%

98Hamilton County, ILIL7,85929−50%

99Pulaski County, ILIL4,82027−78%

100Carroll County, ILIL15,41926−87%

101Putnam County, ILIL5,61925−72%

102Calhoun County, ILIL4,30018−72%

SHOWING 1–102 OF 102

Download CSV (full list, 102 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS