Data / Rankings / Gini index / Counties in Massachusetts

Counties in Massachusetts by gini index

Dukes County had the highest gini index of 14 counties in 2023, at 55.6 index. Franklin County had the lowest, at 43.5 index. The median was 47.2 index and the figure for Massachusetts was 48.8 index. Source: the U.S. Census Bureau.

Highest55.6Dukes County
Lowest43.5Franklin County
Median47.214 counties
Massachusetts48.8History

All counties, 2023

CSVChart (SVG)

Dukes CountyDukes County: 55.6 index55.6Suffolk CountySuffolk County: 52.7 index52.7Berkshire CountyBerkshire County: 49.5 index49.5Norfolk CountyNorfolk County: 48.4 index48.4Essex CountyEssex County: 47.9 index47.9Barnstable CountyBarnstable County: 47.5 index47.5Middlesex CountyMiddlesex County: 47.3 index47.3Nantucket CountyNantucket County: 47.1 index47.1Hampden CountyHampden County: 47.1 index47.1Plymouth CountyPlymouth County: 46.8 index46.8Hampshire CountyHampshire County: 46.2 index46.2Bristol CountyBristol County: 45.8 index45.8Worcester CountyWorcester County: 45.6 index45.6Franklin CountyFranklin County: 43.5 index43.5
index. Source: U.S. Census Bureau. Retrieved 2026-10-10.

Full ranking

RankCounties2023
index		Change on 2022
1Dukes County55.6+1.8
2Suffolk County52.7-0.2
3Berkshire County49.5+0.4
4Norfolk County48.4-0.4
5Essex County47.9-0.4
6Barnstable County47.5+0.9
7Middlesex County47.30
8Nantucket County47.1+1.4
9Hampden County47.10
10Plymouth County46.8+0.3
11Hampshire County46.2+0.1
12Bristol County45.80
13Worcester County45.60
14Franklin County43.5-0.2

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/2023/table-based-SF/data/5YRData/acsdt5y2023-b19083.dat. Retrieved 2026-10-10.

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Questions

Which county has the highest gini index?

Dukes County, with 55.6 index in 2023, according to the U.S. Census Bureau.

Which county has the lowest gini index?

Franklin County, with 43.5 index in 2023.

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 Massachusetts: more rankings