RANKING · 2020 CENSUS · 99 SHOWN OF 99

Fewest graduate degrees, Iowa counties · 2020

Iowa counties with the smallest share of adults 25+ holding a graduate or professional degree (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

RANKPLACESTATEPOPGRADUATE DEGREEVS 2000

01Pocahontas County, IAIA6,8193.0%+4%

02Franklin County, IAIA9,8683.3%+1%

03Taylor County, IAIA5,8353.5%−4%

04Osceola County, IAIA5,9803.6%−20%

05Monroe County, IAIA7,4063.7%+18%

06Wright County, IAIA12,8013.8%−1%

07Ida County, IAIA6,7773.8%+31%

08Adams County, IAIA3,6173.8%+32%

09Humboldt County, IAIA9,4093.9%+2%

10Louisa County, IAIA10,4164.1%+19%

11Lucas County, IAIA8,8474.1%+42%

12Butler County, IAIA14,0494.2%+25%

13Hancock County, IAIA10,5284.2%+11%

14Crawford County, IAIA16,2374.2%+31%

15Tama County, IAIA16,7964.2%+47%

16Appanoose County, IAIA12,0774.2%+37%

17Fremont County, IAIA6,5224.2%+40%

18Clarke County, IAIA9,5744.3%+35%

19Clayton County, IAIA16,8454.3%+25%

20Kossuth County, IAIA14,3224.3%+30%

21Wayne County, IAIA6,7384.4%+24%

22Howard County, IAIA9,4154.5%+33%

23Davis County, IAIA9,2304.5%+36%

24Lyon County, IAIA12,3544.6%+39%

25Montgomery County, IAIA10,0024.7%+42%

26Emmet County, IAIA9,1074.7%+35%

27Winnebago County, IAIA10,2514.7%+10%

28Monona County, IAIA8,5394.7%+55%

29Sac County, IAIA9,5254.8%+43%

30Adair County, IAIA7,4034.8%+111%

31Lee County, IAIA32,3064.9%+46%

32Keokuk County, IAIA9,7974.9%+75%

33Allamakee County, IAIA14,2384.9%+30%

34O'Brien County, IAIA14,2204.9%+48%

35Audubon County, IAIA5,5095.0%+23%

36Floyd County, IAIA14,9015.1%+34%

37Greene County, IAIA8,6585.2%+52%

38Carroll County, IAIA20,3035.3%+53%

39Delaware County, IAIA17,6745.3%+69%

40Chickasaw County, IAIA11,6635.3%+67%

41Fayette County, IAIA19,0475.4%+44%

42Clinton County, IAIA46,0025.4%+37%

43Plymouth County, IAIA25,6975.4%+21%

44Cedar County, IAIA18,3595.4%+51%

45Shelby County, IAIA11,6895.5%+34%

46Page County, IAIA14,8565.5%+14%

47Van Buren County, IAIA7,1315.5%+54%

48Worth County, IAIA7,3385.6%+87%

49Jasper County, IAIA38,1535.6%+28%

50Mitchell County, IAIA10,6505.7%+99%

51Hamilton County, IAIA14,9445.8%+28%

52Jones County, IAIA21,2535.9%+79%

53Iowa County, IAIA16,5045.9%+39%

54Harrison County, IAIA14,6236.0%+93%

55Jackson County, IAIA19,2886.1%+53%

56Webster County, IAIA36,8386.1%+20%

57Mahaska County, IAIA21,8806.2%+42%

58Washington County, IAIA22,6676.2%+29%

59Benton County, IAIA26,0046.2%+71%

60Henry County, IAIA19,3496.3%+31%

61Marshall County, IAIA39,8906.3%+41%

62Ringgold County, IAIA4,6426.3%+38%

63Buena Vista County, IAIA20,4496.4%+37%

64Buchanan County, IAIA20,8836.4%+105%

65Grundy County, IAIA12,3616.4%+43%

66Guthrie County, IAIA10,7826.4%+84%

67Hardin County, IAIA16,4556.5%+45%

68Des Moines County, IAIA38,0776.6%+26%

69Calhoun County, IAIA9,5626.7%+63%

70Cass County, IAIA12,9606.8%+48%

71Palo Alto County, IAIA8,8996.9%+80%

72Mills County, IAIA14,7936.9%+58%

73Pottawattamie County, IAIA92,9966.9%+52%

74Muscatine County, IAIA41,8536.9%+44%

75Union County, IAIA11,8297.0%+95%

76Clay County, IAIA16,2027.0%+145%

77Wapello County, IAIA35,2107.3%+49%

78Boone County, IAIA26,7997.4%+52%

79Cerro Gordo County, IAIA42,3727.5%+23%

80Woodbury County, IAIA106,6497.6%+26%

81Cherokee County, IAIA11,3697.6%+87%

82Madison County, IAIA17,2707.8%+130%

83Dickinson County, IAIA18,0778.4%+54%

84Sioux County, IAIA36,7748.5%+33%

85Warren County, IAIA57,3319.4%+56%

86Black Hawk County, IAIA131,5329.8%+14%

87Marion County, IAIA34,1929.9%+82%

88Bremer County, IAIA25,29610.5%+66%

89Linn County, IAIA232,02810.5%+46%

90Dubuque County, IAIA99,38111.3%+67%

91Winneshiek County, IAIA19,73311.3%+82%

92Polk County, IAIA516,54611.6%+33%

93Decatur County, IAIA7,65512.0%+123%

94Scott County, IAIA175,25912.1%+48%

95Poweshiek County, IAIA18,36813.3%+95%

96Jefferson County, IAIA15,29115.4%+30%

97Dallas County, IAIA118,45716.1%+150%

98Story County, IAIA101,29122.0%+12%

99Johnson County, IAIA160,04425.2%+18%

SHOWING 1–99 OF 99

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