RANKING · 1990 CENSUS · 102 SHOWN OF 102

Least educated, Illinois counties · 1990

Illinois counties with the smallest share of adults 25+ holding a bachelor's degree or higher (1990 ACS). This list covers the 102 counties in Illinois that qualify, ranked against each other statewide. The median across all 102 is 11.1%.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPBACHELOR'S DEGREE OR HIGHERVS –

01Pulaski County, ILIL4,8206.1%–

02Pope County, ILIL3,6726.3%–

03Lawrence County, ILIL13,7906.3%–

04Calhoun County, ILIL4,3007.0%–

05Hardin County, ILIL3,5887.0%–

06Perry County, ILIL20,1607.3%–

07Gallatin County, ILIL4,6167.4%–

08Hamilton County, ILIL7,8597.6%–

09Clay County, ILIL12,7937.6%–

10Alexander County, ILIL4,5707.8%–

11Massac County, ILIL13,5028.0%–

12Pike County, ILIL14,2318.1%–

13Montgomery County, ILIL28,0768.1%–

14Jasper County, ILIL9,0328.1%–

15Cumberland County, ILIL10,2088.2%–

16Franklin County, ILIL36,9168.2%–

17Randolph County, ILIL29,9218.3%–

18Edwards County, ILIL5,8988.4%–

19Fayette County, ILIL20,7908.5%–

20Washington County, ILIL13,5648.7%–

21Wayne County, ILIL15,8828.7%–

22Mason County, ILIL12,4118.8%–

23Greene County, ILIL11,3139.0%–

24Johnson County, ILIL13,3639.1%–

25Scott County, ILIL4,8669.2%–

26Macoupin County, ILIL43,7489.2%–

27Clinton County, ILIL37,1289.2%–

28Clark County, ILIL15,1149.2%–

29Jersey County, ILIL21,1609.3%–

30Christian County, ILIL33,4439.3%–

31Livingston County, ILIL35,0579.4%–

32Saline County, ILIL22,7729.4%–

33Fulton County, ILIL32,9019.5%–

34Henderson County, ILIL5,9849.5%–

35White County, ILIL13,2509.5%–

36Crawford County, ILIL18,6489.5%–

37Moultrie County, ILIL14,3719.5%–

38Marion County, ILIL36,3829.6%–

39Brown County, ILIL6,4019.8%–

40Shelby County, ILIL20,5769.8%–

41Putnam County, ILIL5,6199.8%–

42Whiteside County, ILIL54,1219.9%–

43Iroquois County, ILIL26,15010.1%–

44Marshall County, ILIL11,47310.3%–

45LaSalle County, ILIL107,77310.5%–

46Carroll County, ILIL15,41910.6%–

47Cass County, ILIL12,46310.6%–

48Schuyler County, ILIL6,65710.7%–

49Stark County, ILIL5,31910.8%–

50Union County, ILIL16,65610.9%–

51Edgar County, ILIL16,32311.0%–

52Vermilion County, ILIL71,25911.1%–

53Mercer County, ILIL15,22911.3%–

54Jefferson County, ILIL36,14711.3%–

55Douglas County, ILIL19,88011.4%–

56Lee County, ILIL32,91411.8%–

57Henry County, ILIL48,09511.8%–

58De Witt County, ILIL15,11811.8%–

59Richland County, ILIL15,21911.9%–

60Kankakee County, ILIL105,52511.9%–

61Boone County, ILIL53,56812.0%–

62Jo Daviess County, ILIL21,59412.1%–

63Ford County, ILIL13,21612.1%–

64Ogle County, ILIL51,39912.1%–

65Bureau County, ILIL32,51012.5%–

66Logan County, ILIL27,18212.5%–

67Grundy County, ILIL54,05212.5%–

68Wabash County, ILIL10,90712.6%–

69Bond County, ILIL16,95912.7%–

70Knox County, ILIL47,76712.7%–

71Effingham County, ILIL34,51913.0%–

72Tazewell County, ILIL130,04913.6%–

73Stephenson County, ILIL43,22013.6%–

74Adams County, ILIL64,26713.7%–

75Monroe County, ILIL34,84013.7%–

76Menard County, ILIL11,86313.8%–

77Williamson County, ILIL67,22514.2%–

78Madison County, ILIL263,11014.4%–

79Hancock County, ILIL16,80314.4%–

80Warren County, ILIL16,22214.5%–

81St. Clair County, ILIL250,70814.7%–

82Macon County, ILIL99,30014.8%–

83Rock Island County, ILIL141,86915.0%–

84Woodford County, ILIL38,11115.4%–

85Piatt County, ILIL16,79115.9%–

86Morgan County, ILIL32,51516.0%–

87Winnebago County, ILIL283,67416.7%–

88Kendall County, ILIL145,47017.8%–

89Will County, ILIL712,25318.0%–

90Coles County, ILIL46,60718.7%–

91Peoria County, ILIL178,55319.5%–

92McHenry County, ILIL317,75121.0%–

93Kane County, ILIL525,75721.4%–

94Sangamon County, ILIL194,17022.4%–

95Cook County, ILIL5,194,62522.8%–

96McDonough County, ILIL25,91623.2%–

97DeKalb County, ILIL101,83526.1%–

98McLean County, ILIL171,41929.0%–

99Jackson County, ILIL52,50129.5%–

100Lake County, ILIL719,33932.0%–

101Champaign County, ILIL209,97234.1%–

102DuPage County, ILIL934,29836.0%–

SHOWING 1–102 OF 102

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