RANKING · 2020 CENSUS · 99 SHOWN OF 99

Most college graduates, Iowa counties · 2020

Iowa counties with the most adults 25 and over holding a bachelor's degree or higher, as of the 2020 American Community Survey. Ranked by number of graduates, not the share. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide.

IowaAll states All rankings

SAME RANKING BYCities States Metros

RELATEDMost educated Least educated Most graduate degrees Fewest graduate degrees

RANKPLACESTATEPOPCOLLEGE GRADUATESVS –

01Polk County, IAIA516,546121,176–

02Linn County, IAIA232,02852,015–

03Johnson County, IAIA160,04448,494–

04Scott County, IAIA175,25938,311–

05Dallas County, IAIA118,45729,862–

06Story County, IAIA101,29126,789–

07Black Hawk County, IAIA131,53224,462–

08Dubuque County, IAIA99,38120,455–

09Woodbury County, IAIA106,64915,541–

10Pottawattamie County, IAIA92,99613,915–

11Warren County, IAIA57,33110,523–

12Cerro Gordo County, IAIA42,3727,084–

13Marion County, IAIA34,1926,784–

14Clinton County, IAIA46,0026,309–

15Muscatine County, IAIA41,8536,195–

16Sioux County, IAIA36,7746,130–

17Marshall County, IAIA39,8905,478–

18Bremer County, IAIA25,2965,451–

19Des Moines County, IAIA38,0775,436–

20Webster County, IAIA36,8385,173–

21Jasper County, IAIA38,1535,011–

22Jefferson County, IAIA15,2914,818–

23Boone County, IAIA26,7994,745–

24Wapello County, IAIA35,2104,728–

25Lee County, IAIA32,3064,460–

26Dickinson County, IAIA18,0774,138–

27Winneshiek County, IAIA19,7333,942–

28Plymouth County, IAIA25,6973,781–

29Benton County, IAIA26,0043,631–

30Poweshiek County, IAIA18,3683,364–

31Washington County, IAIA22,6673,297–

32Carroll County, IAIA20,3033,227–

33Mahaska County, IAIA21,8803,166–

34Buchanan County, IAIA20,8833,101–

35Henry County, IAIA19,3493,060–

36Jones County, IAIA21,2532,933–

37Madison County, IAIA17,2702,805–

38Cedar County, IAIA18,3592,751–

39Mills County, IAIA14,7932,715–

40Clay County, IAIA16,2022,682–

41Jackson County, IAIA19,2882,673–

42Buena Vista County, IAIA20,4492,593–

43Hardin County, IAIA16,4552,590–

44Hamilton County, IAIA14,9442,526–

45Fayette County, IAIA19,0472,489–

46Iowa County, IAIA16,5042,472–

47Grundy County, IAIA12,3612,346–

48Page County, IAIA14,8562,268–

49Clayton County, IAIA16,8452,163–

50Cass County, IAIA12,9602,142–

51Floyd County, IAIA14,9012,133–

52O'Brien County, IAIA14,2202,071–

53Delaware County, IAIA17,6742,053–

54Kossuth County, IAIA14,3221,905–

55Union County, IAIA11,8291,893–

56Harrison County, IAIA14,6231,888–

57Butler County, IAIA14,0491,867–

58Cherokee County, IAIA11,3691,860–

59Tama County, IAIA16,7961,794–

60Allamakee County, IAIA14,2381,755–

61Shelby County, IAIA11,6891,736–

62Hancock County, IAIA10,5281,689–

63Crawford County, IAIA16,2371,658–

64Winnebago County, IAIA10,2511,635–

65Appanoose County, IAIA12,0771,629–

66Mitchell County, IAIA10,6501,606–

67Palo Alto County, IAIA8,8991,531–

68Guthrie County, IAIA10,7821,522–

69Lyon County, IAIA12,3541,469–

70Chickasaw County, IAIA11,6631,462–

71Wright County, IAIA12,8011,436–

72Montgomery County, IAIA10,0021,371–

73Calhoun County, IAIA9,5621,367–

74Humboldt County, IAIA9,4091,336–

75Franklin County, IAIA9,8681,322–

76Keokuk County, IAIA9,7971,314–

77Louisa County, IAIA10,4161,311–

78Decatur County, IAIA7,6551,282–

79Greene County, IAIA8,6581,246–

80Sac County, IAIA9,5251,229–

81Emmet County, IAIA9,1071,203–

82Howard County, IAIA9,4151,162–

83Monroe County, IAIA7,4061,073–

84Davis County, IAIA9,2301,048–

85Clarke County, IAIA9,5741,019–

86Adair County, IAIA7,403995–

87Lucas County, IAIA8,847991–

88Monona County, IAIA8,539988–

89Worth County, IAIA7,338971–

90Fremont County, IAIA6,522941–

91Ida County, IAIA6,777828–

92Van Buren County, IAIA7,131822–

93Pocahontas County, IAIA6,819756–

94Audubon County, IAIA5,509754–

95Ringgold County, IAIA4,642652–

96Osceola County, IAIA5,980636–

97Taylor County, IAIA5,835628–

98Wayne County, IAIA6,738619–

99Adams County, IAIA3,617459–

SHOWING 1–99 OF 99

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