RANKING · 2020 CENSUS · 99 SHOWN OF 99

Most educated, Iowa counties · 2020

Iowa counties ranked by the share of adults 25+ holding a bachelor's degree or higher (2020 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 Least educated Most graduate degrees Fewest graduate degrees

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPBACHELOR'S DEGREE OR HIGHERVS 2000

01Johnson County, IAIA160,04454.3%+14%

02Story County, IAIA101,29151.9%+17%

03Dallas County, IAIA118,45750.5%+89%

04Polk County, IAIA516,54637.6%+26%

05Jefferson County, IAIA15,29136.5%+17%

06Linn County, IAIA232,02834.1%+23%

07Bremer County, IAIA25,29633.0%+54%

08Scott County, IAIA175,25932.6%+31%

09Dickinson County, IAIA18,07732.2%+51%

10Dubuque County, IAIA99,38131.4%+47%

11Warren County, IAIA57,33131.3%+47%

12Marion County, IAIA34,19230.8%+63%

13Winneshiek County, IAIA19,73329.8%+45%

14Sioux County, IAIA36,77429.5%+49%

15Black Hawk County, IAIA131,53229.2%+27%

16Poweshiek County, IAIA18,36828.1%+52%

17Grundy County, IAIA12,36127.2%+58%

18Decatur County, IAIA7,65526.5%+75%

19Mills County, IAIA14,79326.0%+60%

20Boone County, IAIA26,79925.4%+35%

21Madison County, IAIA17,27025.3%+76%

22Palo Alto County, IAIA8,89924.8%+79%

23Hamilton County, IAIA14,94424.0%+37%

24Clay County, IAIA16,20223.9%+47%

25Woodbury County, IAIA106,64923.5%+25%

26Carroll County, IAIA20,30323.4%+47%

27Cerro Gordo County, IAIA42,37223.2%+14%

28Winnebago County, IAIA10,25123.1%+40%

29Cass County, IAIA12,96023.0%+38%

30Cherokee County, IAIA11,36922.7%+50%

31Henry County, IAIA19,34922.5%+39%

32Union County, IAIA11,82922.4%+52%

33Plymouth County, IAIA25,69722.3%+15%

34Mitchell County, IAIA10,65022.1%+72%

35Buchanan County, IAIA20,88322.1%+74%

36Hancock County, IAIA10,52822.1%+43%

37Washington County, IAIA22,66722.0%+34%

38Pottawattamie County, IAIA92,99621.9%+46%

39Iowa County, IAIA16,50421.9%+39%

40Muscatine County, IAIA41,85321.8%+27%

41O'Brien County, IAIA14,22021.8%+48%

42Hardin County, IAIA16,45521.5%+26%

43Mahaska County, IAIA21,88021.3%+29%

44Shelby County, IAIA11,68921.1%+37%

45Webster County, IAIA36,83821.1%+25%

46Cedar County, IAIA18,35921.0%+29%

47Marshall County, IAIA39,89020.8%+22%

48Buena Vista County, IAIA20,44920.8%+11%

49Benton County, IAIA26,00420.4%+46%

50Page County, IAIA14,85620.3%+23%

51Humboldt County, IAIA9,40920.1%+31%

52Guthrie County, IAIA10,78220.0%+35%

53Monroe County, IAIA7,40619.9%+58%

54Jones County, IAIA21,25319.9%+57%

55Des Moines County, IAIA38,07719.8%+24%

56Montgomery County, IAIA10,00219.8%+54%

57Greene County, IAIA8,65819.8%+35%

58Calhoun County, IAIA9,56219.7%+28%

59Wapello County, IAIA35,21019.7%+35%

60Jackson County, IAIA19,28819.7%+63%

61Ringgold County, IAIA4,64219.6%+46%

62Floyd County, IAIA14,90119.6%+33%

63Adair County, IAIA7,40319.5%+74%

64Clinton County, IAIA46,00219.3%+34%

65Lyon County, IAIA12,35419.2%+35%

66Jasper County, IAIA38,15319.2%+21%

67Harrison County, IAIA14,62319.1%+51%

68Fremont County, IAIA6,52218.8%+35%

69Audubon County, IAIA5,50918.8%+53%

70Davis County, IAIA9,23018.7%+64%

71Emmet County, IAIA9,10718.6%+43%

72Franklin County, IAIA9,86818.6%+28%

73Howard County, IAIA9,41518.6%+47%

74Lee County, IAIA32,30618.5%+48%

75Keokuk County, IAIA9,79718.4%+59%

76Appanoose County, IAIA12,07718.4%+51%

77Fayette County, IAIA19,04718.3%+32%

78Worth County, IAIA7,33818.2%+44%

79Kossuth County, IAIA14,32218.2%+34%

80Allamakee County, IAIA14,23818.2%+26%

81Butler County, IAIA14,04918.2%+47%

82Sac County, IAIA9,52517.8%+31%

83Chickasaw County, IAIA11,66317.8%+46%

84Ida County, IAIA6,77717.6%+29%

85Delaware County, IAIA17,67417.4%+34%

86Adams County, IAIA3,61717.3%+44%

87Clayton County, IAIA16,84517.1%+34%

88Louisa County, IAIA10,41616.9%+33%

89Lucas County, IAIA8,84716.6%+49%

90Van Buren County, IAIA7,13116.4%+39%

91Wright County, IAIA12,80116.3%+21%

92Pocahontas County, IAIA6,81915.9%+6%

93Clarke County, IAIA9,57415.9%+32%

94Monona County, IAIA8,53915.7%+17%

95Tama County, IAIA16,79615.6%+21%

96Crawford County, IAIA16,23715.1%+23%

97Osceola County, IAIA5,98015.0%+12%

98Taylor County, IAIA5,83514.8%+23%

99Wayne County, IAIA6,73814.3%+17%

SHOWING 1–99 OF 99

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