RANKING · 2024 ACS · 101 SHOWN OF 101

Highest Welsh population share, Illinois counties

Illinois counties ranked by the share of all residents who are Welsh ancestry (2023 American Community Survey). A concentration measure: Welsh residents as a percentage of total population. This list covers the 101 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

RANKPLACESTATEPOPWELSH SHAREVS 2000

01Schuyler County, ILIL6,6571.4%–

02Stark County, ILIL5,3191.2%–

03Marion County, ILIL36,3821.1%–

04Warren County, ILIL16,2221.1%–

05Massac County, ILIL13,5021.0%–

06Franklin County, ILIL36,9160.9%–

07Piatt County, ILIL16,7910.9%–

08Carroll County, ILIL15,4190.9%–

09Henderson County, ILIL5,9840.9%–

10Hamilton County, ILIL7,8590.9%–

11Fayette County, ILIL20,7900.9%–

12Bureau County, ILIL32,5100.8%–

13Saline County, ILIL22,7720.7%–

14Mason County, ILIL12,4110.7%–

15Marshall County, ILIL11,4730.7%–

16Boone County, ILIL53,5680.7%–

17McDonough County, ILIL25,9160.7%–

18Peoria County, ILIL178,5530.7%–

19Moultrie County, ILIL14,3710.7%–

20Jo Daviess County, ILIL21,5940.7%–

21LaSalle County, ILIL107,7730.6%–

22Morgan County, ILIL32,5150.6%–

23Sangamon County, ILIL194,1700.6%–

24Henry County, ILIL48,0950.6%–

25Coles County, ILIL46,6070.6%–

26Rock Island County, ILIL141,8690.6%–

27Crawford County, ILIL18,6480.6%–

28Edwards County, ILIL5,8980.6%–

29Mercer County, ILIL15,2290.6%–

30McLean County, ILIL171,4190.6%–

31Madison County, ILIL263,1100.5%–

32Champaign County, ILIL209,9720.5%–

33Macoupin County, ILIL43,7480.5%–

34Montgomery County, ILIL28,0760.5%–

35Jefferson County, ILIL36,1470.5%–

36Woodford County, ILIL38,1110.5%–

37Johnson County, ILIL13,3630.5%–

38Ogle County, ILIL51,3990.5%–

39Perry County, ILIL20,1600.5%–

40Pike County, ILIL14,2310.5%–

41Iroquois County, ILIL26,1500.5%–

42Douglas County, ILIL19,8800.5%–

43Greene County, ILIL11,3130.5%–

44Randolph County, ILIL29,9210.5%–

45Pope County, ILIL3,6720.5%–

46Tazewell County, ILIL130,0490.5%–

47Lee County, ILIL32,9140.4%–

48Williamson County, ILIL67,2250.4%–

49White County, ILIL13,2500.4%–

50Adams County, ILIL64,2670.4%–

51St. Clair County, ILIL250,7080.4%–

52Monroe County, ILIL34,8400.4%–

53Whiteside County, ILIL54,1210.4%–

54DeKalb County, ILIL101,8350.4%–

55Cumberland County, ILIL10,2080.4%–

56Brown County, ILIL6,4010.4%–

57Stephenson County, ILIL43,2200.4%–

58Vermilion County, ILIL71,2590.4%–

59Logan County, ILIL27,1820.4%–

60Jackson County, ILIL52,5010.4%–

61Hancock County, ILIL16,8030.4%–

62Winnebago County, ILIL283,6740.4%–

63De Witt County, ILIL15,1180.3%–

64DuPage County, ILIL934,2980.3%–

65Macon County, ILIL99,3000.3%–

66Kane County, ILIL525,7570.3%–

67Kendall County, ILIL145,4700.3%–

68Fulton County, ILIL32,9010.3%–

69McHenry County, ILIL317,7510.3%–

70Knox County, ILIL47,7670.3%–

71Effingham County, ILIL34,5190.3%–

72Christian County, ILIL33,4430.3%–

73Gallatin County, ILIL4,6160.3%–

74Lake County, ILIL719,3390.3%–

75Will County, ILIL712,2530.3%–

76Washington County, ILIL13,5640.3%–

77Clinton County, ILIL37,1280.3%–

78Putnam County, ILIL5,6190.2%–

79Richland County, ILIL15,2190.2%–

80Pulaski County, ILIL4,8200.2%–

81Shelby County, ILIL20,5760.2%–

82Union County, ILIL16,6560.2%–

83Edgar County, ILIL16,3230.2%–

84Cook County, ILIL5,194,6250.2%–

85Grundy County, ILIL54,0520.2%–

86Scott County, ILIL4,8660.2%–

87Bond County, ILIL16,9590.2%–

88Calhoun County, ILIL4,3000.2%–

89Ford County, ILIL13,2160.2%–

90Jersey County, ILIL21,1600.2%–

91Alexander County, ILIL4,5700.2%–

92Lawrence County, ILIL13,7900.1%–

93Kankakee County, ILIL105,5250.1%–

94Wayne County, ILIL15,8820.1%–

95Livingston County, ILIL35,0570.1%–

96Clay County, ILIL12,7930.1%–

97Wabash County, ILIL10,9070.1%–

98Menard County, ILIL11,8630.1%–

99Cass County, ILIL12,4630.1%–

100Jasper County, ILIL9,0320.1%–

101Clark County, ILIL15,1140.1%–

SHOWING 1–101 OF 101

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