Counties in Iowa by gini index, 2024

Adams County had the highest gini index of 99 counties in 2024, at 50.3 index. Monroe County had the lowest, at 38.3 index. The median was 43.4 index and the figure for Iowa was 44.4 index. Source: the U.S. Census Bureau.

Highest50.3Adams County
Lowest38.3Monroe County
Median43.499 counties
Iowa44.4History

Top 40 counties, 2024

CSVChart (SVG)

Adams CountyAdams County: 50.3 index50.3Johnson CountyJohnson County: 49.9 index49.9Van Buren CountyVan Buren County: 48.8 index48.8Jefferson CountyJefferson County: 48 index48Wayne CountyWayne County: 47.8 index47.8Montgomery CountyMontgomery County: 47.2 index47.2Story CountyStory County: 46.9 index46.9Wright CountyWright County: 46.7 index46.7Cass CountyCass County: 46.5 index46.5Fremont CountyFremont County: 46.5 index46.5Adair CountyAdair County: 46 index46Humboldt CountyHumboldt County: 45.9 index45.9Page CountyPage County: 45.8 index45.8Audubon CountyAudubon County: 45.8 index45.8Cerro Gordo CountyCerro Gordo County: 45.6 index45.6Franklin CountyFranklin County: 45.6 index45.6Scott CountyScott County: 45.2 index45.2Calhoun CountyCalhoun County: 45.2 index45.2Cherokee CountyCherokee County: 45.1 index45.1Appanoose CountyAppanoose County: 45.1 index45.1Fayette CountyFayette County: 45 index45Black Hawk CountyBlack Hawk County: 44.9 index44.9Ringgold CountyRinggold County: 44.8 index44.8Linn CountyLinn County: 44.7 index44.7Mitchell CountyMitchell County: 44.7 index44.7Shelby CountyShelby County: 44.7 index44.7Lee CountyLee County: 44.7 index44.7Poweshiek CountyPoweshiek County: 44.6 index44.6Jackson CountyJackson County: 44.6 index44.6Dickinson CountyDickinson County: 44.6 index44.6Clinton CountyClinton County: 44.5 index44.5Winneshiek CountyWinneshiek County: 44.4 index44.4Jasper CountyJasper County: 44.4 index44.4Dubuque CountyDubuque County: 44.3 index44.3Webster CountyWebster County: 44.3 index44.3Wapello CountyWapello County: 44.3 index44.3Winnebago CountyWinnebago County: 44.2 index44.2Keokuk CountyKeokuk County: 44.1 index44.1Clarke CountyClarke County: 44.1 index44.1Dallas CountyDallas County: 44 index44
index. Source: U.S. Census Bureau. Retrieved 2026-10-10.

Full ranking

RankCounties2024
index
Change on 2023
1Adams County50.3+0.5
2Johnson County49.9-0.3
3Van Buren County48.8+5.2
4Jefferson County48-0.2
5Wayne County47.8+0.2
6Montgomery County47.2+1.4
7Story County46.9-0.9
8Wright County46.7+1.4
9Cass County46.5-0.6
10Fremont County46.5+3.5
11Adair County46+0.8
12Humboldt County45.9+0.3
13Page County45.8+1.3
14Audubon County45.8+1.5
15Cerro Gordo County45.6-0.2
15Franklin County45.6+1.2
17Scott County45.2-0.4
18Calhoun County45.2+1
19Cherokee County45.1+1.1
20Appanoose County45.1-0.4
21Fayette County45+1.1
22Black Hawk County44.9-1.2
23Ringgold County44.8+1.3
24Linn County44.7+0.1
25Mitchell County44.7+1.3
26Shelby County44.7+0.3
27Lee County44.7+1.3
28Poweshiek County44.6-1.4
29Jackson County44.6+0.9
30Dickinson County44.6+1.2
31Clinton County44.5+0.7
32Winneshiek County44.4+0.1
33Jasper County44.4+1
34Dubuque County44.3-0.4
35Webster County44.3+0.4
36Wapello County44.3-1.4
37Winnebago County44.2-0.7
38Keokuk County44.1+0.5
39Clarke County44.1+2.3
40Dallas County44+0.5
41Delaware County44-0.2
42Des Moines County43.8-2.6
43Hamilton County43.8-0.3
44Polk County43.7-0
45Carroll County43.7+1.1
45Ida County43.7+2.4
47Woodbury County43.60
48Osceola County43.4+0.5
49Guthrie County43.4+0.7
50Marion County43.4+0.7
51Lucas County43.3+0.5
52Floyd County43.3-0.5
53Decatur County42.9-0.6
54Washington County42.9+0.4
55Crawford County42.8-0.3
56Pottawattamie County42.8-0.5
57Clayton County42.8+0.3
58Bremer County42.7+0.9
59Howard County42.5+1.3
60Hardin County42.5+1.7
61Mahaska County42.4-0.1
62Henry County42.4+2.3
63Buena Vista County42.2+0.2
64Taylor County42.1-0.2
65Union County41.9-0.8
66Kossuth County41.8-0.7
67Muscatine County41.8+0.4
68Clay County41.7-0.7
69Allamakee County41.7-0.4
70Hancock County41.7-0
71Palo Alto County41.6+0.9
72Greene County41.5-0.9
73Lyon County41.5+2.1
74Mills County41.4-0.4
75Monona County41.3+1
76Sac County41.3-2.4
77Iowa County41.3-1.3
78Chickasaw County41.3+0.5
79Sioux County40.9-0.2
80Emmet County40.9-0.8
81Plymouth County40.7-1.3
82Louisa County40.3-0.3
83Boone County40-0.6
84Cedar County39.9+1.4
85Davis County39.8-1.3
85Worth County39.8+1.2
87Benton County39.7+0.5
88Harrison County39.7-2.7
89Tama County39.7-3.2
90Pocahontas County39.5-1
91Grundy County39.4+1.9
92Warren County39.4-0.1
93O'Brien County39.2-0.7
94Madison County39.1-0.2
95Jones County39.1+0.2
96Butler County38.9-0
97Buchanan County38.5-1.8
98Marshall County38.5-0.4
99Monroe County38.3+0.8

Other periods

About this ranking

Income inequality on a 0 to 100 scale, where 0 is perfect equality.

Eurostat, equivalised disposable income after social transfers (EU-SILC), for the EU and its countries. For other countries use gini_index_world_bank, which is measured on a different basis. For the United States, ACS five-year estimate B19083 measures inequality in household money income before taxes. Census publishes a coefficient from 0 to 1; Invokely multiplies it by 100. The displayed year is the final year of the five-year period. Negative household incomes are treated as zero. This differs from the EU-SILC measure based on equivalised disposable income and should not be treated as directly comparable.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B19083: Gini index of household income inequality (coefficient multiplied by 100). https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b19083.dat. Retrieved 2026-10-10.

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Questions

Which county has the highest gini index?

Adams County, with 50.3 index in 2024, according to the U.S. Census Bureau.

Which county has the lowest gini index?

Monroe County, with 38.3 index in 2024.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B19083: Gini index of household income inequality (coefficient multiplied by 100). Retrieved 2026-10-10.

Gini index: other rankings

Counties in Iowa: more rankings