RANKING · 2010 CENSUS · 101 SHOWN OF 101

Highest Welsh population share, Illinois counties · 2010

Illinois counties ranked by the share of all residents who are Welsh ancestry (2010 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 0.5%.

Welsh 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

RANKPLACESTATEPOPWELSH SHAREVS –

01Washington County, ILIL13,5641.8%–

02Saline County, ILIL22,7721.2%–

03Hardin County, ILIL3,5881.1%–

04Grundy County, ILIL54,0521.0%–

05Greene County, ILIL11,3131.0%–

06Stark County, ILIL5,3191.0%–

07Edwards County, ILIL5,8980.9%–

08Marshall County, ILIL11,4730.9%–

09Fulton County, ILIL32,9010.9%–

10Cumberland County, ILIL10,2080.9%–

11Perry County, ILIL20,1600.9%–

12Jasper County, ILIL9,0320.9%–

13Marion County, ILIL36,3820.9%–

14Clark County, ILIL15,1140.8%–

15McDonough County, ILIL25,9160.8%–

16Scott County, ILIL4,8660.8%–

17Sangamon County, ILIL194,1700.8%–

18Bond County, ILIL16,9590.8%–

19Crawford County, ILIL18,6480.8%–

20Jo Daviess County, ILIL21,5940.8%–

21Vermilion County, ILIL71,2590.8%–

22McLean County, ILIL171,4190.7%–

23Mercer County, ILIL15,2290.7%–

24White County, ILIL13,2500.7%–

25Union County, ILIL16,6560.7%–

26Madison County, ILIL263,1100.7%–

27Williamson County, ILIL67,2250.7%–

28Knox County, ILIL47,7670.7%–

29Peoria County, ILIL178,5530.7%–

30De Witt County, ILIL15,1180.6%–

31Kendall County, ILIL145,4700.6%–

32Franklin County, ILIL36,9160.6%–

33Warren County, ILIL16,2220.6%–

34Pike County, ILIL14,2310.6%–

35Logan County, ILIL27,1820.6%–

36Putnam County, ILIL5,6190.6%–

37Woodford County, ILIL38,1110.6%–

38Champaign County, ILIL209,9720.6%–

39Henry County, ILIL48,0950.6%–

40Pope County, ILIL3,6720.6%–

41St. Clair County, ILIL250,7080.6%–

42Menard County, ILIL11,8630.6%–

43Hancock County, ILIL16,8030.6%–

44Massac County, ILIL13,5020.5%–

45Macoupin County, ILIL43,7480.5%–

46Piatt County, ILIL16,7910.5%–

47Kane County, ILIL525,7570.5%–

48DeKalb County, ILIL101,8350.5%–

49Boone County, ILIL53,5680.5%–

50Coles County, ILIL46,6070.5%–

51Iroquois County, ILIL26,1500.5%–

52Kankakee County, ILIL105,5250.5%–

53Jefferson County, ILIL36,1470.5%–

54Douglas County, ILIL19,8800.5%–

55LaSalle County, ILIL107,7730.5%–

56McHenry County, ILIL317,7510.5%–

57DuPage County, ILIL934,2980.5%–

58Moultrie County, ILIL14,3710.5%–

59Winnebago County, ILIL283,6740.5%–

60Livingston County, ILIL35,0570.5%–

61Gallatin County, ILIL4,6160.5%–

62Jackson County, ILIL52,5010.4%–

63Macon County, ILIL99,3000.4%–

64Lake County, ILIL719,3390.4%–

65Rock Island County, ILIL141,8690.4%–

66Bureau County, ILIL32,5100.4%–

67Shelby County, ILIL20,5760.4%–

68Tazewell County, ILIL130,0490.4%–

69Clay County, ILIL12,7930.4%–

70Fayette County, ILIL20,7900.4%–

71Lee County, ILIL32,9140.4%–

72Schuyler County, ILIL6,6570.4%–

73Stephenson County, ILIL43,2200.4%–

74Will County, ILIL712,2530.4%–

75Randolph County, ILIL29,9210.4%–

76Wabash County, ILIL10,9070.4%–

77Adams County, ILIL64,2670.3%–

78Carroll County, ILIL15,4190.3%–

79Monroe County, ILIL34,8400.3%–

80Christian County, ILIL33,4430.3%–

81Morgan County, ILIL32,5150.3%–

82Edgar County, ILIL16,3230.3%–

83Jersey County, ILIL21,1600.3%–

84Montgomery County, ILIL28,0760.3%–

85Ogle County, ILIL51,3990.3%–

86Lawrence County, ILIL13,7900.3%–

87Alexander County, ILIL4,5700.3%–

88Effingham County, ILIL34,5190.3%–

89Clinton County, ILIL37,1280.3%–

90Cook County, ILIL5,194,6250.3%–

91Cass County, ILIL12,4630.2%–

92Richland County, ILIL15,2190.2%–

93Henderson County, ILIL5,9840.2%–

94Johnson County, ILIL13,3630.2%–

95Ford County, ILIL13,2160.2%–

96Whiteside County, ILIL54,1210.2%–

97Wayne County, ILIL15,8820.1%–

98Mason County, ILIL12,4110.1%–

99Calhoun County, ILIL4,3000.1%–

100Pulaski County, ILIL4,8200.0%–

101Hamilton County, ILIL7,8590.0%–

SHOWING 1–101 OF 101

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS