RANKING · 2010 CENSUS · 99 SHOWN OF 99

Least educated, Iowa counties · 2010

Iowa counties with the smallest share of adults 25+ holding a bachelor's degree or higher (2023 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

01Lucas County, IAIA8,84710.5%−5%

02Wayne County, IAIA6,73810.8%−11%

03Howard County, IAIA9,41511.5%−9%

04Taylor County, IAIA5,83512.3%+3%

05Clarke County, IAIA9,57412.9%+7%

06Louisa County, IAIA10,41613.1%+3%

07Allamakee County, IAIA14,23813.5%−7%

08Chickasaw County, IAIA11,66313.5%+10%

09Van Buren County, IAIA7,13113.5%+14%

10Adair County, IAIA7,40313.6%+21%

11Keokuk County, IAIA9,79713.8%+19%

12Franklin County, IAIA9,86814.4%−0%

13Cass County, IAIA12,96014.5%−13%

14Delaware County, IAIA17,67414.6%+12%

15Monona County, IAIA8,53914.7%+9%

16Lee County, IAIA32,30614.8%+18%

17Butler County, IAIA14,04914.9%+20%

18Wapello County, IAIA35,21014.9%+2%

19Clayton County, IAIA16,84514.9%+17%

20Floyd County, IAIA14,90114.9%+1%

21Crawford County, IAIA16,23715.0%+21%

22Jackson County, IAIA19,28815.0%+24%

23Audubon County, IAIA5,50915.0%+22%

24Monroe County, IAIA7,40615.1%+20%

25Hancock County, IAIA10,52815.4%+0%

26Harrison County, IAIA14,62315.5%+22%

27Union County, IAIA11,82915.6%+6%

28Adams County, IAIA3,61715.6%+30%

29Wright County, IAIA12,80115.7%+16%

30Humboldt County, IAIA9,40915.9%+3%

31Lyon County, IAIA12,35415.9%+11%

32Jones County, IAIA21,25315.9%+26%

33Worth County, IAIA7,33816.0%+27%

34Shelby County, IAIA11,68916.1%+5%

35Palo Alto County, IAIA8,89916.1%+16%

36Osceola County, IAIA5,98016.3%+21%

37Hamilton County, IAIA14,94416.4%−6%

38Pocahontas County, IAIA6,81916.4%+9%

39Fayette County, IAIA19,04716.5%+20%

40Tama County, IAIA16,79616.5%+28%

41Jasper County, IAIA38,15316.6%+4%

42Appanoose County, IAIA12,07716.6%+36%

43Mitchell County, IAIA10,65016.6%+30%

44Kossuth County, IAIA14,32216.7%+23%

45Page County, IAIA14,85616.7%+1%

46Clinton County, IAIA46,00217.0%+18%

47Davis County, IAIA9,23017.0%+49%

48Pottawattamie County, IAIA92,99617.3%+15%

49Fremont County, IAIA6,52217.4%+25%

50Greene County, IAIA8,65817.5%+20%

51Des Moines County, IAIA38,07717.6%+10%

52Montgomery County, IAIA10,00217.6%+36%

53Decatur County, IAIA7,65517.8%+18%

54Benton County, IAIA26,00417.8%+28%

55Mahaska County, IAIA21,88017.9%+8%

56Calhoun County, IAIA9,56218.0%+17%

57Webster County, IAIA36,83818.0%+7%

58Emmet County, IAIA9,10718.1%+39%

59Sac County, IAIA9,52518.2%+34%

60Madison County, IAIA17,27018.2%+26%

61Ida County, IAIA6,77718.3%+34%

62Clay County, IAIA16,20218.5%+14%

63Buchanan County, IAIA20,88318.5%+46%

64Cedar County, IAIA18,35918.6%+15%

65Marshall County, IAIA39,89018.7%+10%

66Guthrie County, IAIA10,78218.9%+27%

67Iowa County, IAIA16,50419.2%+22%

68Cherokee County, IAIA11,36919.2%+27%

69O'Brien County, IAIA14,22019.3%+31%

70Winnebago County, IAIA10,25119.3%+18%

71Washington County, IAIA22,66719.4%+19%

72Boone County, IAIA26,79919.6%+4%

73Plymouth County, IAIA25,69719.8%+3%

74Muscatine County, IAIA41,85319.8%+16%

75Henry County, IAIA19,34919.9%+23%

76Carroll County, IAIA20,30320.0%+25%

77Hardin County, IAIA16,45520.2%+18%

78Ringgold County, IAIA4,64220.8%+55%

79Woodbury County, IAIA106,64920.8%+10%

80Cerro Gordo County, IAIA42,37221.2%+4%

81Grundy County, IAIA12,36121.6%+26%

82Poweshiek County, IAIA18,36821.7%+18%

83Sioux County, IAIA36,77422.4%+13%

84Mills County, IAIA14,79322.6%+39%

85Buena Vista County, IAIA20,44922.6%+21%

86Marion County, IAIA34,19224.0%+27%

87Black Hawk County, IAIA131,53224.6%+7%

88Dubuque County, IAIA99,38125.3%+19%

89Winneshiek County, IAIA19,73326.3%+29%

90Bremer County, IAIA25,29626.5%+23%

91Warren County, IAIA57,33126.7%+26%

92Dickinson County, IAIA18,07727.2%+27%

93Linn County, IAIA232,02829.6%+7%

94Scott County, IAIA175,25929.7%+20%

95Jefferson County, IAIA15,29130.1%−4%

96Polk County, IAIA516,54632.8%+11%

97Dallas County, IAIA118,45740.2%+50%

98Story County, IAIA101,29147.2%+6%

99Johnson County, IAIA160,04450.8%+7%

SHOWING 1–99 OF 99

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES