RANKING · 2010 CENSUS · 99 SHOWN OF 99

Most income inequality (Gini), Iowa counties · 2010

Iowa counties ranked by Gini index of household income inequality, where 0 = perfect equality and 1 = maximum inequality (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

RELATEDHighest median household income Lowest median household income Highest per-capita income Lowest poverty rate Highest poverty rate Most residents in poverty

RANKPLACESTATEPOPINCOME INEQUALITY (GINI)VS –

01Johnson County, IAIA160,0440.473–

02Jefferson County, IAIA15,2910.459–

03Adams County, IAIA3,6170.458–

04Emmet County, IAIA9,1070.455–

05Decatur County, IAIA7,6550.453–

06Story County, IAIA101,2910.453–

07Clay County, IAIA16,2020.452–

08Henry County, IAIA19,3490.452–

09Appanoose County, IAIA12,0770.451–

10Scott County, IAIA175,2590.449–

11O'Brien County, IAIA14,2200.445–

12Wapello County, IAIA35,2100.444–

13Kossuth County, IAIA14,3220.441–

14Black Hawk County, IAIA131,5320.438–

15Worth County, IAIA7,3380.437–

16Clarke County, IAIA9,5740.436–

17Hamilton County, IAIA14,9440.435–

18Webster County, IAIA36,8380.434–

19Polk County, IAIA516,5460.432–

20Des Moines County, IAIA38,0770.430–

21Audubon County, IAIA5,5090.428–

22Palo Alto County, IAIA8,8990.428–

23Guthrie County, IAIA10,7820.427–

24Cerro Gordo County, IAIA42,3720.426–

25Dubuque County, IAIA99,3810.426–

26Floyd County, IAIA14,9010.426–

27Page County, IAIA14,8560.425–

28Carroll County, IAIA20,3030.424–

29Dickinson County, IAIA18,0770.423–

30Linn County, IAIA232,0280.423–

31Taylor County, IAIA5,8350.422–

32Calhoun County, IAIA9,5620.422–

33Sac County, IAIA9,5250.422–

34Woodbury County, IAIA106,6490.422–

35Hardin County, IAIA16,4550.420–

36Plymouth County, IAIA25,6970.420–

37Poweshiek County, IAIA18,3680.419–

38Monona County, IAIA8,5390.417–

39Dallas County, IAIA118,4570.415–

40Buena Vista County, IAIA20,4490.414–

41Montgomery County, IAIA10,0020.414–

42Wayne County, IAIA6,7380.414–

43Davis County, IAIA9,2300.412–

44Fayette County, IAIA19,0470.412–

45Lee County, IAIA32,3060.412–

46Madison County, IAIA17,2700.411–

47Union County, IAIA11,8290.410–

48Van Buren County, IAIA7,1310.409–

49Adair County, IAIA7,4030.408–

50Osceola County, IAIA5,9800.408–

51Boone County, IAIA26,7990.407–

52Jackson County, IAIA19,2880.407–

53Lucas County, IAIA8,8470.407–

54Wright County, IAIA12,8010.407–

55Fremont County, IAIA6,5220.405–

56Marshall County, IAIA39,8900.405–

57Warren County, IAIA57,3310.405–

58Winnebago County, IAIA10,2510.405–

59Mahaska County, IAIA21,8800.403–

60Ringgold County, IAIA4,6420.403–

61Tama County, IAIA16,7960.403–

62Winneshiek County, IAIA19,7330.403–

63Greene County, IAIA8,6580.402–

64Bremer County, IAIA25,2960.402–

65Cass County, IAIA12,9600.402–

66Muscatine County, IAIA41,8530.402–

67Chickasaw County, IAIA11,6630.401–

68Crawford County, IAIA16,2370.401–

69Humboldt County, IAIA9,4090.401–

70Monroe County, IAIA7,4060.401–

71Pottawattamie County, IAIA92,9960.399–

72Butler County, IAIA14,0490.399–

73Keokuk County, IAIA9,7970.399–

74Shelby County, IAIA11,6890.399–

75Clinton County, IAIA46,0020.397–

76Marion County, IAIA34,1920.397–

77Jasper County, IAIA38,1530.395–

78Iowa County, IAIA16,5040.394–

79Harrison County, IAIA14,6230.393–

80Howard County, IAIA9,4150.393–

81Ida County, IAIA6,7770.391–

82Cherokee County, IAIA11,3690.389–

83Delaware County, IAIA17,6740.388–

84Franklin County, IAIA9,8680.387–

85Pocahontas County, IAIA6,8190.386–

86Grundy County, IAIA12,3610.384–

87Jones County, IAIA21,2530.383–

88Sioux County, IAIA36,7740.383–

89Washington County, IAIA22,6670.383–

90Mills County, IAIA14,7930.380–

91Buchanan County, IAIA20,8830.379–

92Benton County, IAIA26,0040.378–

93Clayton County, IAIA16,8450.376–

94Hancock County, IAIA10,5280.367–

95Allamakee County, IAIA14,2380.359–

96Louisa County, IAIA10,4160.356–

97Mitchell County, IAIA10,6500.355–

98Cedar County, IAIA18,3590.352–

99Lyon County, IAIA12,3540.352–

SHOWING 1–99 OF 99

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