Data / Rankings / Gini index / Counties in Massachusetts

Counties in Massachusetts by gini index

Dukes County had the highest gini index of 14 counties in 2022, at 53.8 index. Franklin County had the lowest, at 43.7 index. The median was 46.8 index and the figure for Massachusetts was 48.8 index. Source: the U.S. Census Bureau.

Highest53.8Dukes County
Lowest43.7Franklin County
Median46.814 counties
Massachusetts48.8History

All counties, 2022

CSVChart (SVG)

Dukes CountyDukes County: 53.8 index53.8Suffolk CountySuffolk County: 52.8 index52.8Berkshire CountyBerkshire County: 49.1 index49.1Norfolk CountyNorfolk County: 48.9 index48.9Essex CountyEssex County: 48.3 index48.3Middlesex CountyMiddlesex County: 47.2 index47.2Hampden CountyHampden County: 47.1 index47.1Barnstable CountyBarnstable County: 46.6 index46.6Plymouth CountyPlymouth County: 46.5 index46.5Hampshire CountyHampshire County: 46.1 index46.1Nantucket CountyNantucket County: 45.8 index45.8Bristol CountyBristol County: 45.8 index45.8Worcester CountyWorcester County: 45.6 index45.6Franklin CountyFranklin County: 43.7 index43.7
index. Source: U.S. Census Bureau. Retrieved 2026-10-10.

Full ranking

RankCounties2022
index		Change on 2021
1Dukes County53.8+1.2
2Suffolk County52.80
3Berkshire County49.1+1.1
4Norfolk County48.9+0.8
5Essex County48.3+0.1
6Middlesex County47.2+0.3
7Hampden County47.1-0.4
8Barnstable County46.6+0.5
9Plymouth County46.5+0.5
10Hampshire County46.1-0
11Nantucket County45.8-2.3
12Bristol County45.8-0
13Worcester County45.6+0.2
14Franklin County43.70

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/2022/table-based-SF/data/5YRData/acsdt5y2022-b19083.dat. Retrieved 2026-10-10.

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Questions

Which county has the highest gini index?

Dukes County, with 53.8 index in 2022, according to the U.S. Census Bureau.

Which county has the lowest gini index?

Franklin County, with 43.7 index in 2022.

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