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 (2024 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. The median across all 101 is 0.4%. Biggest climber in the top 100 since 2020: Stark County, IL, up 84 places to #2.

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IllinoisAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPWELSH SHAREVS 2010

01▲49Schuyler County, ILIL6,6571.4%+1.0 pts

02▲84Stark County, ILIL5,3191.2%+0.2 pts

03▲76Marion County, ILIL36,3821.1%+0.3 pts

04▲7Warren County, ILIL16,2221.1%+0.5 pts

05Massac County, ILIL13,5021.0%+0.4 pts

06▲4Franklin County, ILIL36,9160.9%+0.3 pts

07▼6Piatt County, ILIL16,7910.9%+0.4 pts

08▲76Carroll County, ILIL15,4190.9%+0.5 pts

09▼2Henderson County, ILIL5,9840.9%+0.6 pts

10▼4Hamilton County, ILIL7,8590.9%+0.8 pts

11▲83Fayette County, ILIL20,7900.9%+0.5 pts

12▲2Bureau County, ILIL32,5100.8%+0.4 pts

13▼11Saline County, ILIL22,7720.7%−0.5 pts

14▲2Mason County, ILIL12,4110.7%+0.5 pts

15▲4Marshall County, ILIL11,4730.7%−0.2 pts

16▲20Boone County, ILIL53,5680.7%+0.2 pts

17▲71McDonough County, ILIL25,9160.7%−0.1 pts

18▲4Peoria County, ILIL178,5530.7%0.0 pts

19▲18Moultrie County, ILIL14,3710.7%+0.2 pts

20▼7Jo Daviess County, ILIL21,5940.7%−0.1 pts

21▲55LaSalle County, ILIL107,7730.6%+0.2 pts

22▼1Morgan County, ILIL32,5150.6%+0.3 pts

23▲6Sangamon County, ILIL194,1700.6%−0.2 pts

24▲11Henry County, ILIL48,0950.6%0.0 pts

25▼16Coles County, ILIL46,6070.6%+0.1 pts

26▲6Rock Island County, ILIL141,8690.6%+0.2 pts

27▲41Crawford County, ILIL18,6480.6%−0.2 pts

28▲15Edwards County, ILIL5,8980.6%−0.3 pts

29▲17Mercer County, ILIL15,2290.6%−0.2 pts

30▲19McLean County, ILIL171,4190.6%−0.2 pts

31Madison County, ILIL263,1100.5%−0.2 pts

32▲12Champaign County, ILIL209,9720.5%−0.1 pts

33▲27Macoupin County, ILIL43,7480.5%0.0 pts

34▼30Montgomery County, ILIL28,0760.5%+0.2 pts

35▲12Jefferson County, ILIL36,1470.5%0.0 pts

36▼19Woodford County, ILIL38,1110.5%−0.1 pts

37▲45Johnson County, ILIL13,3630.5%+0.3 pts

38▲33Ogle County, ILIL51,3990.5%+0.2 pts

39▼34Perry County, ILIL20,1600.5%−0.4 pts

40▲61Pike County, ILIL14,2310.5%−0.1 pts

41▼33Iroquois County, ILIL26,1500.5%0.0 pts

42▼3Douglas County, ILIL19,8800.5%0.0 pts

43▲55Greene County, ILIL11,3130.5%−0.5 pts

44▲9Randolph County, ILIL29,9210.5%+0.1 pts

45▲6Pope County, ILIL3,6720.5%−0.1 pts

46▼18Tazewell County, ILIL130,0490.5%0.0 pts

47▲36Lee County, ILIL32,9140.4%+0.1 pts

48▼33Williamson County, ILIL67,2250.4%−0.2 pts

49▼11White County, ILIL13,2500.4%−0.3 pts

50▼2Adams County, ILIL64,2670.4%+0.1 pts

51▲1St. Clair County, ILIL250,7080.4%−0.1 pts

52▲9Monroe County, ILIL34,8400.4%+0.1 pts

53▲24Whiteside County, ILIL54,1210.4%+0.2 pts

54▲5DeKalb County, ILIL101,8350.4%−0.1 pts

55▲37Cumberland County, ILIL10,2080.4%−0.5 pts

56▲19Brown County, ILIL6,4010.4%–

57▼17Stephenson County, ILIL43,2200.4%0.0 pts

58▼17Vermilion County, ILIL71,2590.4%−0.4 pts

59▼33Logan County, ILIL27,1820.4%−0.2 pts

60▼35Jackson County, ILIL52,5010.4%−0.1 pts

61▼16Hancock County, ILIL16,8030.4%−0.2 pts

62▲1Winnebago County, ILIL283,6740.4%−0.1 pts

63▲27De Witt County, ILIL15,1180.3%−0.3 pts

64▲8DuPage County, ILIL934,2980.3%−0.1 pts

65▼53Macon County, ILIL99,3000.3%−0.1 pts

66▲14Kane County, ILIL525,7570.3%−0.2 pts

67▼5Kendall County, ILIL145,4700.3%−0.3 pts

68▼50Fulton County, ILIL32,9010.3%−0.6 pts

69▼2McHenry County, ILIL317,7510.3%−0.2 pts

70▼6Knox County, ILIL47,7670.3%−0.4 pts

71▼1Effingham County, ILIL34,5190.3%0.0 pts

72▼7Christian County, ILIL33,4430.3%0.0 pts

73▼46Gallatin County, ILIL4,6160.3%−0.2 pts

74▲7Lake County, ILIL719,3390.3%−0.2 pts

75▲3Will County, ILIL712,2530.3%−0.1 pts

76▼42Washington County, ILIL13,5640.3%−1.6 pts

77▲20Clinton County, ILIL37,1280.3%0.0 pts

78▼21Putnam County, ILIL5,6190.2%−0.4 pts

79▼56Richland County, ILIL15,2190.2%0.0 pts

80▼14Pulaski County, ILIL4,8200.2%+0.2 pts

81▲4Shelby County, ILIL20,5760.2%−0.2 pts

82▼26Union County, ILIL16,6560.2%−0.5 pts

83▲13Edgar County, ILIL16,3230.2%−0.1 pts

84▲9Cook County, ILIL5,194,6250.2%−0.1 pts

85▲6Grundy County, ILIL54,0520.2%−0.8 pts

86▲13Scott County, ILIL4,8660.2%−0.6 pts

87▼84Bond County, ILIL16,9590.2%−0.6 pts

88▲12Calhoun County, ILIL4,3000.2%+0.1 pts

89▼20Ford County, ILIL13,2160.2%0.0 pts

90▼1Jersey County, ILIL21,1600.2%−0.1 pts

91▼33Alexander County, ILIL4,5700.2%−0.1 pts

92▼50Lawrence County, ILIL13,7900.1%−0.1 pts

93▼39Kankakee County, ILIL105,5250.1%−0.4 pts

94▼21Wayne County, ILIL15,8820.1%0.0 pts

95▼8Livingston County, ILIL35,0570.1%−0.3 pts

96▼66Clay County, ILIL12,7930.1%−0.3 pts

97▼23Wabash County, ILIL10,9070.1%−0.2 pts

98▼74Menard County, ILIL11,8630.1%−0.4 pts

99▼4Cass County, ILIL12,4630.1%−0.1 pts

100▼45Jasper County, ILIL9,0320.1%−0.8 pts

101▼81Clark County, ILIL15,1140.1%−0.8 pts

SHOWING 1–101 OF 101

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