RANKING · 2024 ACS · 99 SHOWN OF 99

Fewest graduate degrees, Iowa counties

Iowa counties with the smallest share of adults 25+ holding a graduate or professional degree (2024 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

RELATEDMost college graduates Most educated Least educated Most graduate degrees

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPGRADUATE DEGREEVS 2000

01Louisa County, IAIA10,4162.9%−15%

02Fremont County, IAIA6,5223.4%+13%

03Audubon County, IAIA5,5093.6%−9%

04Howard County, IAIA9,4153.9%+16%

05Clayton County, IAIA16,8453.9%+15%

06Appanoose County, IAIA12,0774.1%+32%

07Lyon County, IAIA12,3544.1%+24%

08Osceola County, IAIA5,9804.1%−8%

09Crawford County, IAIA16,2374.2%+31%

10Pocahontas County, IAIA6,8194.2%+46%

11Emmet County, IAIA9,1074.4%+28%

12Palo Alto County, IAIA8,8994.5%+18%

13Taylor County, IAIA5,8354.6%+26%

14Humboldt County, IAIA9,4094.6%+21%

15Worth County, IAIA7,3384.7%+56%

16Keokuk County, IAIA9,7974.7%+68%

17Floyd County, IAIA14,9014.8%+26%

18O'Brien County, IAIA14,2204.9%+45%

19Plymouth County, IAIA25,6975.0%+12%

20Franklin County, IAIA9,8685.0%+51%

21Wayne County, IAIA6,7385.0%+41%

22Jackson County, IAIA19,2885.0%+27%

23Ida County, IAIA6,7775.1%+76%

24Cass County, IAIA12,9605.1%+10%

25Davis County, IAIA9,2305.1%+54%

26Sac County, IAIA9,5255.1%+54%

27Butler County, IAIA14,0495.1%+55%

28Adair County, IAIA7,4035.2%+124%

29Montgomery County, IAIA10,0025.3%+59%

30Lucas County, IAIA8,8475.3%+82%

31Hancock County, IAIA10,5285.4%+42%

32Greene County, IAIA8,6585.4%+59%

33Chickasaw County, IAIA11,6635.5%+72%

34Ringgold County, IAIA4,6425.7%+24%

35Cedar County, IAIA18,3595.8%+60%

36Kossuth County, IAIA14,3225.8%+76%

37Page County, IAIA14,8565.8%+21%

38Buchanan County, IAIA20,8835.8%+87%

39Clarke County, IAIA9,5745.8%+84%

40Van Buren County, IAIA7,1315.8%+62%

41Harrison County, IAIA14,6235.8%+86%

42Adams County, IAIA3,6175.8%+101%

43Webster County, IAIA36,8385.8%+15%

44Hardin County, IAIA16,4555.9%+32%

45Tama County, IAIA16,7965.9%+108%

46Fayette County, IAIA19,0476.0%+60%

47Mahaska County, IAIA21,8806.0%+39%

48Carroll County, IAIA20,3036.1%+76%

49Monona County, IAIA8,5396.1%+100%

50Union County, IAIA11,8296.3%+76%

51Calhoun County, IAIA9,5626.4%+58%

52Jones County, IAIA21,2536.5%+98%

53Madison County, IAIA17,2706.5%+91%

54Delaware County, IAIA17,6746.5%+107%

55Wright County, IAIA12,8016.5%+71%

56Jasper County, IAIA38,1536.5%+47%

57Lee County, IAIA32,3066.5%+95%

58Hamilton County, IAIA14,9446.7%+47%

59Allamakee County, IAIA14,2386.7%+77%

60Iowa County, IAIA16,5046.9%+63%

61Clay County, IAIA16,2027.0%+144%

62Clinton County, IAIA46,0027.0%+77%

63Winnebago County, IAIA10,2517.1%+66%

64Muscatine County, IAIA41,8537.2%+49%

65Henry County, IAIA19,3497.2%+51%

66Marshall County, IAIA39,8907.4%+65%

67Monroe County, IAIA7,4067.4%+136%

68Grundy County, IAIA12,3617.4%+66%

69Des Moines County, IAIA38,0777.5%+44%

70Buena Vista County, IAIA20,4497.5%+62%

71Mitchell County, IAIA10,6507.5%+163%

72Wapello County, IAIA35,2107.6%+55%

73Pottawattamie County, IAIA92,9967.9%+73%

74Cerro Gordo County, IAIA42,3727.9%+29%

75Guthrie County, IAIA10,7828.0%+130%

76Benton County, IAIA26,0048.2%+123%

77Sioux County, IAIA36,7748.3%+30%

78Cherokee County, IAIA11,3698.3%+105%

79Shelby County, IAIA11,6898.3%+102%

80Woodbury County, IAIA106,6498.4%+40%

81Dickinson County, IAIA18,0778.6%+58%

82Washington County, IAIA22,6678.9%+85%

83Boone County, IAIA26,7999.5%+95%

84Mills County, IAIA14,7939.6%+120%

85Marion County, IAIA34,1929.7%+79%

86Warren County, IAIA57,3319.7%+61%

87Winneshiek County, IAIA19,73310.3%+66%

88Black Hawk County, IAIA131,53211.0%+27%

89Decatur County, IAIA7,65511.2%+109%

90Poweshiek County, IAIA18,36811.2%+65%

91Linn County, IAIA232,02811.4%+59%

92Dubuque County, IAIA99,38111.6%+72%

93Bremer County, IAIA25,29612.1%+91%

94Polk County, IAIA516,54613.1%+51%

95Scott County, IAIA175,25914.0%+71%

96Dallas County, IAIA118,45717.7%+175%

97Jefferson County, IAIA15,29118.8%+58%

98Story County, IAIA101,29123.5%+20%

99Johnson County, IAIA160,04424.1%+12%

SHOWING 1–99 OF 99

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES