RANKING · 2010 CENSUS · 99 SHOWN OF 99

Most graduate degrees, Iowa counties · 2010

Iowa counties ranked by the share of adults 25+ holding a graduate or professional degree (2010 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, IAIA160,04423.1%+8%

02Story County, IAIA101,29119.3%−1%

03Jefferson County, IAIA15,29113.1%+11%

04Dallas County, IAIA118,45710.6%+64%

05Scott County, IAIA175,2599.9%+21%

06Winneshiek County, IAIA19,7339.6%+55%

07Polk County, IAIA516,5469.5%+9%

08Poweshiek County, IAIA18,3688.8%+30%

09Dubuque County, IAIA99,3818.8%+30%

10Linn County, IAIA232,0288.3%+15%

11Dickinson County, IAIA18,0778.1%+48%

12Black Hawk County, IAIA131,5327.8%−10%

13Bremer County, IAIA25,2967.5%+18%

14Warren County, IAIA57,3317.4%+22%

15Marion County, IAIA34,1927.3%+34%

16Buena Vista County, IAIA20,4496.8%+47%

17Hardin County, IAIA16,4556.7%+51%

18Sioux County, IAIA36,7746.7%+4%

19Woodbury County, IAIA106,6496.5%+8%

20Muscatine County, IAIA41,8536.5%+34%

21Ringgold County, IAIA4,6426.2%+35%

22Plymouth County, IAIA25,6976.1%+36%

23Marshall County, IAIA39,8905.7%+27%

24Henry County, IAIA19,3495.7%+19%

25Cerro Gordo County, IAIA42,3725.6%−9%

26Winnebago County, IAIA10,2515.5%+29%

27Union County, IAIA11,8295.5%+55%

28Des Moines County, IAIA38,0775.3%+2%

29Appanoose County, IAIA12,0775.3%+73%

30Sac County, IAIA9,5255.3%+59%

31Pottawattamie County, IAIA92,9965.1%+12%

32Mills County, IAIA14,7935.1%+17%

33Wapello County, IAIA35,2105.1%+3%

34Fayette County, IAIA19,0475.0%+34%

35Buchanan County, IAIA20,8835.0%+61%

36Lee County, IAIA32,3065.0%+49%

37Mahaska County, IAIA21,8804.9%+13%

38Emmet County, IAIA9,1074.9%+40%

39Jasper County, IAIA38,1534.9%+10%

40Cedar County, IAIA18,3594.8%+33%

41Davis County, IAIA9,2304.8%+45%

42Grundy County, IAIA12,3614.8%+7%

43Webster County, IAIA36,8384.8%−6%

44Madison County, IAIA17,2704.7%+38%

45Crawford County, IAIA16,2374.7%+46%

46Clinton County, IAIA46,0024.6%+17%

47Boone County, IAIA26,7994.6%−5%

48Ida County, IAIA6,7774.6%+60%

49Decatur County, IAIA7,6554.6%−15%

50Washington County, IAIA22,6674.6%−5%

51Wright County, IAIA12,8014.5%+18%

52Kossuth County, IAIA14,3224.5%+37%

53Iowa County, IAIA16,5044.4%+4%

54Cherokee County, IAIA11,3694.4%+8%

55Tama County, IAIA16,7964.4%+53%

56Adams County, IAIA3,6174.4%+50%

57Calhoun County, IAIA9,5624.3%+6%

58Pocahontas County, IAIA6,8194.3%+48%

59Benton County, IAIA26,0044.3%+17%

60Mitchell County, IAIA10,6504.2%+48%

61Floyd County, IAIA14,9014.2%+10%

62Jackson County, IAIA19,2884.2%+6%

63Humboldt County, IAIA9,4094.2%+11%

64Page County, IAIA14,8564.1%−14%

65O'Brien County, IAIA14,2204.1%+21%

66Jones County, IAIA21,2534.0%+23%

67Shelby County, IAIA11,6894.0%−3%

68Monroe County, IAIA7,4064.0%+26%

69Delaware County, IAIA17,6744.0%+27%

70Worth County, IAIA7,3383.9%+32%

71Taylor County, IAIA5,8353.9%+8%

72Clayton County, IAIA16,8453.9%+15%

73Carroll County, IAIA20,3033.8%+11%

74Hancock County, IAIA10,5283.8%+2%

75Greene County, IAIA8,6583.8%+13%

76Allamakee County, IAIA14,2383.7%−2%

77Lyon County, IAIA12,3543.7%+12%

78Fremont County, IAIA6,5223.7%+22%

79Guthrie County, IAIA10,7823.7%+5%

80Audubon County, IAIA5,5093.6%−9%

81Clay County, IAIA16,2023.6%+27%

82Franklin County, IAIA9,8683.6%+8%

83Butler County, IAIA14,0493.5%+5%

84Cass County, IAIA12,9603.5%−25%

85Palo Alto County, IAIA8,8993.5%−10%

86Osceola County, IAIA5,9803.4%−25%

87Hamilton County, IAIA14,9443.3%−27%

88Montgomery County, IAIA10,0023.3%−0%

89Keokuk County, IAIA9,7973.2%+15%

90Chickasaw County, IAIA11,6633.2%−0%

91Van Buren County, IAIA7,1313.2%−11%

92Clarke County, IAIA9,5743.1%−2%

93Harrison County, IAIA14,6233.0%−4%

94Howard County, IAIA9,4153.0%−11%

95Louisa County, IAIA10,4162.9%−16%

96Adair County, IAIA7,4032.8%+21%

97Monona County, IAIA8,5392.6%−16%

98Wayne County, IAIA6,7382.5%−29%

99Lucas County, IAIA8,8472.4%−16%

SHOWING 1–99 OF 99

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS