RANKING · 2010 CENSUS · 99 SHOWN OF 99

Fewest graduate degrees, Iowa counties · 2010

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

01Lucas County, IAIA8,8472.4%−16%

02Wayne County, IAIA6,7382.5%−29%

03Monona County, IAIA8,5392.6%−16%

04Adair County, IAIA7,4032.8%+21%

05Louisa County, IAIA10,4162.9%−16%

06Howard County, IAIA9,4153.0%−11%

07Harrison County, IAIA14,6233.0%−4%

08Clarke County, IAIA9,5743.1%−2%

09Van Buren County, IAIA7,1313.2%−11%

10Chickasaw County, IAIA11,6633.2%−0%

11Keokuk County, IAIA9,7973.2%+15%

12Montgomery County, IAIA10,0023.3%−0%

13Hamilton County, IAIA14,9443.3%−27%

14Osceola County, IAIA5,9803.4%−25%

15Palo Alto County, IAIA8,8993.5%−10%

16Cass County, IAIA12,9603.5%−25%

17Butler County, IAIA14,0493.5%+5%

18Franklin County, IAIA9,8683.6%+8%

19Clay County, IAIA16,2023.6%+27%

20Audubon County, IAIA5,5093.6%−9%

21Guthrie County, IAIA10,7823.7%+5%

22Fremont County, IAIA6,5223.7%+22%

23Lyon County, IAIA12,3543.7%+12%

24Allamakee County, IAIA14,2383.7%−2%

25Greene County, IAIA8,6583.8%+13%

26Hancock County, IAIA10,5283.8%+2%

27Carroll County, IAIA20,3033.8%+11%

28Clayton County, IAIA16,8453.9%+15%

29Taylor County, IAIA5,8353.9%+8%

30Worth County, IAIA7,3383.9%+32%

31Delaware County, IAIA17,6744.0%+27%

32Monroe County, IAIA7,4064.0%+26%

33Shelby County, IAIA11,6894.0%−3%

34Jones County, IAIA21,2534.0%+23%

35O'Brien County, IAIA14,2204.1%+21%

36Page County, IAIA14,8564.1%−14%

37Humboldt County, IAIA9,4094.2%+11%

38Jackson County, IAIA19,2884.2%+6%

39Floyd County, IAIA14,9014.2%+10%

40Mitchell County, IAIA10,6504.2%+48%

41Benton County, IAIA26,0044.3%+17%

42Pocahontas County, IAIA6,8194.3%+48%

43Calhoun County, IAIA9,5624.3%+6%

44Adams County, IAIA3,6174.4%+50%

45Tama County, IAIA16,7964.4%+53%

46Cherokee County, IAIA11,3694.4%+8%

47Iowa County, IAIA16,5044.4%+4%

48Kossuth County, IAIA14,3224.5%+37%

49Wright County, IAIA12,8014.5%+18%

50Washington County, IAIA22,6674.6%−5%

51Decatur County, IAIA7,6554.6%−15%

52Ida County, IAIA6,7774.6%+60%

53Boone County, IAIA26,7994.6%−5%

54Clinton County, IAIA46,0024.6%+17%

55Crawford County, IAIA16,2374.7%+46%

56Madison County, IAIA17,2704.7%+38%

57Webster County, IAIA36,8384.8%−6%

58Grundy County, IAIA12,3614.8%+7%

59Davis County, IAIA9,2304.8%+45%

60Cedar County, IAIA18,3594.8%+33%

61Jasper County, IAIA38,1534.9%+10%

62Emmet County, IAIA9,1074.9%+40%

63Mahaska County, IAIA21,8804.9%+13%

64Lee County, IAIA32,3065.0%+49%

65Buchanan County, IAIA20,8835.0%+61%

66Fayette County, IAIA19,0475.0%+34%

67Wapello County, IAIA35,2105.1%+3%

68Mills County, IAIA14,7935.1%+17%

69Pottawattamie County, IAIA92,9965.1%+12%

70Sac County, IAIA9,5255.3%+59%

71Appanoose County, IAIA12,0775.3%+73%

72Des Moines County, IAIA38,0775.3%+2%

73Union County, IAIA11,8295.5%+55%

74Winnebago County, IAIA10,2515.5%+29%

75Cerro Gordo County, IAIA42,3725.6%−9%

76Henry County, IAIA19,3495.7%+19%

77Marshall County, IAIA39,8905.7%+27%

78Plymouth County, IAIA25,6976.1%+36%

79Ringgold County, IAIA4,6426.2%+35%

80Muscatine County, IAIA41,8536.5%+34%

81Woodbury County, IAIA106,6496.5%+8%

82Sioux County, IAIA36,7746.7%+4%

83Hardin County, IAIA16,4556.7%+51%

84Buena Vista County, IAIA20,4496.8%+47%

85Marion County, IAIA34,1927.3%+34%

86Warren County, IAIA57,3317.4%+22%

87Bremer County, IAIA25,2967.5%+18%

88Black Hawk County, IAIA131,5327.8%−10%

89Dickinson County, IAIA18,0778.1%+48%

90Linn County, IAIA232,0288.3%+15%

91Dubuque County, IAIA99,3818.8%+30%

92Poweshiek County, IAIA18,3688.8%+30%

93Polk County, IAIA516,5469.5%+9%

94Winneshiek County, IAIA19,7339.6%+55%

95Scott County, IAIA175,2599.9%+21%

96Dallas County, IAIA118,45710.6%+64%

97Jefferson County, IAIA15,29113.1%+11%

98Story County, IAIA101,29119.3%−1%

99Johnson County, IAIA160,04423.1%+8%

SHOWING 1–99 OF 99

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