RANKING · 2010 CENSUS · 99 SHOWN OF 99

Most equal income distribution, Iowa counties · 2010

Iowa counties with the lowest income inequality, measured by the Gini index (2010 ACS). This list covers the 99 counties in Iowa that qualify, ranked against each other statewide. The median across all 99 is 0.408.

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SAME RANKING BYCities States Metros ZIP codes

YEAR2010 2024

RANKPLACESTATEPOPINCOME INEQUALITY (GINI)VS –

01Cedar County, IAIA18,3590.352–

02Lyon County, IAIA12,3540.352–

03Mitchell County, IAIA10,6500.355–

04Louisa County, IAIA10,4160.356–

05Allamakee County, IAIA14,2380.359–

06Hancock County, IAIA10,5280.367–

07Clayton County, IAIA16,8450.376–

08Benton County, IAIA26,0040.378–

09Buchanan County, IAIA20,8830.379–

10Mills County, IAIA14,7930.380–

11Jones County, IAIA21,2530.383–

12Sioux County, IAIA36,7740.383–

13Washington County, IAIA22,6670.383–

14Grundy County, IAIA12,3610.384–

15Pocahontas County, IAIA6,8190.386–

16Franklin County, IAIA9,8680.387–

17Delaware County, IAIA17,6740.388–

18Cherokee County, IAIA11,3690.389–

19Ida County, IAIA6,7770.391–

20Harrison County, IAIA14,6230.393–

21Howard County, IAIA9,4150.393–

22Iowa County, IAIA16,5040.394–

23Jasper County, IAIA38,1530.395–

24Clinton County, IAIA46,0020.397–

25Marion County, IAIA34,1920.397–

26Pottawattamie County, IAIA92,9960.399–

27Butler County, IAIA14,0490.399–

28Keokuk County, IAIA9,7970.399–

29Shelby County, IAIA11,6890.399–

30Chickasaw County, IAIA11,6630.401–

31Crawford County, IAIA16,2370.401–

32Humboldt County, IAIA9,4090.401–

33Monroe County, IAIA7,4060.401–

34Greene County, IAIA8,6580.402–

35Bremer County, IAIA25,2960.402–

36Cass County, IAIA12,9600.402–

37Muscatine County, IAIA41,8530.402–

38Mahaska County, IAIA21,8800.403–

39Ringgold County, IAIA4,6420.403–

40Tama County, IAIA16,7960.403–

41Winneshiek County, IAIA19,7330.403–

42Fremont County, IAIA6,5220.405–

43Marshall County, IAIA39,8900.405–

44Warren County, IAIA57,3310.405–

45Winnebago County, IAIA10,2510.405–

46Boone County, IAIA26,7990.407–

47Jackson County, IAIA19,2880.407–

48Lucas County, IAIA8,8470.407–

49Wright County, IAIA12,8010.407–

50Adair County, IAIA7,4030.408–

51Osceola County, IAIA5,9800.408–

52Van Buren County, IAIA7,1310.409–

53Union County, IAIA11,8290.410–

54Madison County, IAIA17,2700.411–

55Davis County, IAIA9,2300.412–

56Fayette County, IAIA19,0470.412–

57Lee County, IAIA32,3060.412–

58Buena Vista County, IAIA20,4490.414–

59Montgomery County, IAIA10,0020.414–

60Wayne County, IAIA6,7380.414–

61Dallas County, IAIA118,4570.415–

62Monona County, IAIA8,5390.417–

63Poweshiek County, IAIA18,3680.419–

64Hardin County, IAIA16,4550.420–

65Plymouth County, IAIA25,6970.420–

66Taylor County, IAIA5,8350.422–

67Calhoun County, IAIA9,5620.422–

68Sac County, IAIA9,5250.422–

69Woodbury County, IAIA106,6490.422–

70Dickinson County, IAIA18,0770.423–

71Linn County, IAIA232,0280.423–

72Carroll County, IAIA20,3030.424–

73Page County, IAIA14,8560.425–

74Cerro Gordo County, IAIA42,3720.426–

75Dubuque County, IAIA99,3810.426–

76Floyd County, IAIA14,9010.426–

77Guthrie County, IAIA10,7820.427–

78Audubon County, IAIA5,5090.428–

79Palo Alto County, IAIA8,8990.428–

80Des Moines County, IAIA38,0770.430–

81Polk County, IAIA516,5460.432–

82Webster County, IAIA36,8380.434–

83Hamilton County, IAIA14,9440.435–

84Clarke County, IAIA9,5740.436–

85Worth County, IAIA7,3380.437–

86Black Hawk County, IAIA131,5320.438–

87Kossuth County, IAIA14,3220.441–

88Wapello County, IAIA35,2100.444–

89O'Brien County, IAIA14,2200.445–

90Scott County, IAIA175,2590.449–

91Appanoose County, IAIA12,0770.451–

92Clay County, IAIA16,2020.452–

93Henry County, IAIA19,3490.452–

94Decatur County, IAIA7,6550.453–

95Story County, IAIA101,2910.453–

96Emmet County, IAIA9,1070.455–

97Adams County, IAIA3,6170.458–

98Jefferson County, IAIA15,2910.459–

99Johnson County, IAIA160,0440.473–

SHOWING 1–99 OF 99

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS