RANKING · 2020 CENSUS · 99 SHOWN OF 99

Least educated, Iowa counties · 2020

Iowa counties with the smallest share of adults 25+ holding a bachelor's degree or higher (2020 ACS). This list covers the 99 counties in Iowa that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPBACHELOR'S DEGREE OR HIGHERVS 2000

01Wayne County, IAIA6,73814.3%+17%

02Taylor County, IAIA5,83514.8%+23%

03Osceola County, IAIA5,98015.0%+12%

04Crawford County, IAIA16,23715.1%+23%

05Tama County, IAIA16,79615.6%+21%

06Monona County, IAIA8,53915.7%+17%

07Clarke County, IAIA9,57415.9%+32%

08Pocahontas County, IAIA6,81915.9%+6%

09Wright County, IAIA12,80116.3%+21%

10Van Buren County, IAIA7,13116.4%+39%

11Lucas County, IAIA8,84716.6%+49%

12Louisa County, IAIA10,41616.9%+33%

13Clayton County, IAIA16,84517.1%+34%

14Adams County, IAIA3,61717.3%+44%

15Delaware County, IAIA17,67417.4%+34%

16Ida County, IAIA6,77717.6%+29%

17Chickasaw County, IAIA11,66317.8%+46%

18Sac County, IAIA9,52517.8%+31%

19Butler County, IAIA14,04918.2%+47%

20Allamakee County, IAIA14,23818.2%+26%

21Kossuth County, IAIA14,32218.2%+34%

22Worth County, IAIA7,33818.2%+44%

23Fayette County, IAIA19,04718.3%+32%

24Appanoose County, IAIA12,07718.4%+51%

25Keokuk County, IAIA9,79718.4%+59%

26Lee County, IAIA32,30618.5%+48%

27Howard County, IAIA9,41518.6%+47%

28Franklin County, IAIA9,86818.6%+28%

29Emmet County, IAIA9,10718.6%+43%

30Davis County, IAIA9,23018.7%+64%

31Audubon County, IAIA5,50918.8%+53%

32Fremont County, IAIA6,52218.8%+35%

33Harrison County, IAIA14,62319.1%+51%

34Jasper County, IAIA38,15319.2%+21%

35Lyon County, IAIA12,35419.2%+35%

36Clinton County, IAIA46,00219.3%+34%

37Adair County, IAIA7,40319.5%+74%

38Floyd County, IAIA14,90119.6%+33%

39Ringgold County, IAIA4,64219.6%+46%

40Jackson County, IAIA19,28819.7%+63%

41Wapello County, IAIA35,21019.7%+35%

42Calhoun County, IAIA9,56219.7%+28%

43Greene County, IAIA8,65819.8%+35%

44Montgomery County, IAIA10,00219.8%+54%

45Des Moines County, IAIA38,07719.8%+24%

46Jones County, IAIA21,25319.9%+57%

47Monroe County, IAIA7,40619.9%+58%

48Guthrie County, IAIA10,78220.0%+35%

49Humboldt County, IAIA9,40920.1%+31%

50Page County, IAIA14,85620.3%+23%

51Benton County, IAIA26,00420.4%+46%

52Buena Vista County, IAIA20,44920.8%+11%

53Marshall County, IAIA39,89020.8%+22%

54Cedar County, IAIA18,35921.0%+29%

55Webster County, IAIA36,83821.1%+25%

56Shelby County, IAIA11,68921.1%+37%

57Mahaska County, IAIA21,88021.3%+29%

58Hardin County, IAIA16,45521.5%+26%

59O'Brien County, IAIA14,22021.8%+48%

60Muscatine County, IAIA41,85321.8%+27%

61Iowa County, IAIA16,50421.9%+39%

62Pottawattamie County, IAIA92,99621.9%+46%

63Washington County, IAIA22,66722.0%+34%

64Hancock County, IAIA10,52822.1%+43%

65Buchanan County, IAIA20,88322.1%+74%

66Mitchell County, IAIA10,65022.1%+72%

67Plymouth County, IAIA25,69722.3%+15%

68Union County, IAIA11,82922.4%+52%

69Henry County, IAIA19,34922.5%+39%

70Cherokee County, IAIA11,36922.7%+50%

71Cass County, IAIA12,96023.0%+38%

72Winnebago County, IAIA10,25123.1%+40%

73Cerro Gordo County, IAIA42,37223.2%+14%

74Carroll County, IAIA20,30323.4%+47%

75Woodbury County, IAIA106,64923.5%+25%

76Clay County, IAIA16,20223.9%+47%

77Hamilton County, IAIA14,94424.0%+37%

78Palo Alto County, IAIA8,89924.8%+79%

79Madison County, IAIA17,27025.3%+76%

80Boone County, IAIA26,79925.4%+35%

81Mills County, IAIA14,79326.0%+60%

82Decatur County, IAIA7,65526.5%+75%

83Grundy County, IAIA12,36127.2%+58%

84Poweshiek County, IAIA18,36828.1%+52%

85Black Hawk County, IAIA131,53229.2%+27%

86Sioux County, IAIA36,77429.5%+49%

87Winneshiek County, IAIA19,73329.8%+45%

88Marion County, IAIA34,19230.8%+63%

89Warren County, IAIA57,33131.3%+47%

90Dubuque County, IAIA99,38131.4%+47%

91Dickinson County, IAIA18,07732.2%+51%

92Scott County, IAIA175,25932.6%+31%

93Bremer County, IAIA25,29633.0%+54%

94Linn County, IAIA232,02834.1%+23%

95Jefferson County, IAIA15,29136.5%+17%

96Polk County, IAIA516,54637.6%+26%

97Dallas County, IAIA118,45750.5%+89%

98Story County, IAIA101,29151.9%+17%

99Johnson County, IAIA160,04454.3%+14%

SHOWING 1–99 OF 99

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