RANKING · 2024 ACS · 99 SHOWN OF 99

Most graduate degrees, Iowa counties

Iowa counties ranked by the 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 Fewest graduate degrees

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPGRADUATE DEGREEVS 2000

01Johnson County, IAIA160,04424.1%+12%

02Story County, IAIA101,29123.5%+20%

03Jefferson County, IAIA15,29118.8%+58%

04Dallas County, IAIA118,45717.7%+175%

05Scott County, IAIA175,25914.0%+71%

06Polk County, IAIA516,54613.1%+51%

07Bremer County, IAIA25,29612.1%+91%

08Dubuque County, IAIA99,38111.6%+72%

09Linn County, IAIA232,02811.4%+59%

10Poweshiek County, IAIA18,36811.2%+65%

11Decatur County, IAIA7,65511.2%+109%

12Black Hawk County, IAIA131,53211.0%+27%

13Winneshiek County, IAIA19,73310.3%+66%

14Warren County, IAIA57,3319.7%+61%

15Marion County, IAIA34,1929.7%+79%

16Mills County, IAIA14,7939.6%+120%

17Boone County, IAIA26,7999.5%+95%

18Washington County, IAIA22,6678.9%+85%

19Dickinson County, IAIA18,0778.6%+58%

20Woodbury County, IAIA106,6498.4%+40%

21Shelby County, IAIA11,6898.3%+102%

22Cherokee County, IAIA11,3698.3%+105%

23Sioux County, IAIA36,7748.3%+30%

24Benton County, IAIA26,0048.2%+123%

25Guthrie County, IAIA10,7828.0%+130%

26Cerro Gordo County, IAIA42,3727.9%+29%

27Pottawattamie County, IAIA92,9967.9%+73%

28Wapello County, IAIA35,2107.6%+55%

29Mitchell County, IAIA10,6507.5%+163%

30Buena Vista County, IAIA20,4497.5%+62%

31Des Moines County, IAIA38,0777.5%+44%

32Grundy County, IAIA12,3617.4%+66%

33Monroe County, IAIA7,4067.4%+136%

34Marshall County, IAIA39,8907.4%+65%

35Henry County, IAIA19,3497.2%+51%

36Muscatine County, IAIA41,8537.2%+49%

37Winnebago County, IAIA10,2517.1%+66%

38Clinton County, IAIA46,0027.0%+77%

39Clay County, IAIA16,2027.0%+144%

40Iowa County, IAIA16,5046.9%+63%

41Allamakee County, IAIA14,2386.7%+77%

42Hamilton County, IAIA14,9446.7%+47%

43Lee County, IAIA32,3066.5%+95%

44Jasper County, IAIA38,1536.5%+47%

45Wright County, IAIA12,8016.5%+71%

46Delaware County, IAIA17,6746.5%+107%

47Madison County, IAIA17,2706.5%+91%

48Jones County, IAIA21,2536.5%+98%

49Calhoun County, IAIA9,5626.4%+58%

50Union County, IAIA11,8296.3%+76%

51Monona County, IAIA8,5396.1%+100%

52Carroll County, IAIA20,3036.1%+76%

53Mahaska County, IAIA21,8806.0%+39%

54Fayette County, IAIA19,0476.0%+60%

55Tama County, IAIA16,7965.9%+108%

56Hardin County, IAIA16,4555.9%+32%

57Webster County, IAIA36,8385.8%+15%

58Adams County, IAIA3,6175.8%+101%

59Harrison County, IAIA14,6235.8%+86%

60Van Buren County, IAIA7,1315.8%+62%

61Clarke County, IAIA9,5745.8%+84%

62Buchanan County, IAIA20,8835.8%+87%

63Page County, IAIA14,8565.8%+21%

64Kossuth County, IAIA14,3225.8%+76%

65Cedar County, IAIA18,3595.8%+60%

66Ringgold County, IAIA4,6425.7%+24%

67Chickasaw County, IAIA11,6635.5%+72%

68Greene County, IAIA8,6585.4%+59%

69Hancock County, IAIA10,5285.4%+42%

70Lucas County, IAIA8,8475.3%+82%

71Montgomery County, IAIA10,0025.3%+59%

72Adair County, IAIA7,4035.2%+124%

73Butler County, IAIA14,0495.1%+55%

74Sac County, IAIA9,5255.1%+54%

75Davis County, IAIA9,2305.1%+54%

76Cass County, IAIA12,9605.1%+10%

77Ida County, IAIA6,7775.1%+76%

78Jackson County, IAIA19,2885.0%+27%

79Wayne County, IAIA6,7385.0%+41%

80Franklin County, IAIA9,8685.0%+51%

81Plymouth County, IAIA25,6975.0%+12%

82O'Brien County, IAIA14,2204.9%+45%

83Floyd County, IAIA14,9014.8%+26%

84Keokuk County, IAIA9,7974.7%+68%

85Worth County, IAIA7,3384.7%+56%

86Humboldt County, IAIA9,4094.6%+21%

87Taylor County, IAIA5,8354.6%+26%

88Palo Alto County, IAIA8,8994.5%+18%

89Emmet County, IAIA9,1074.4%+28%

90Pocahontas County, IAIA6,8194.2%+46%

91Crawford County, IAIA16,2374.2%+31%

92Osceola County, IAIA5,9804.1%−8%

93Lyon County, IAIA12,3544.1%+24%

94Appanoose County, IAIA12,0774.1%+32%

95Clayton County, IAIA16,8453.9%+15%

96Howard County, IAIA9,4153.9%+16%

97Audubon County, IAIA5,5093.6%−9%

98Fremont County, IAIA6,5223.4%+13%

99Louisa County, IAIA10,4162.9%−15%

SHOWING 1–99 OF 99

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