Data / Rankings / Gini index / Counties in Connecticut

Counties in Connecticut by gini index

Western Connecticut Planning Region had the highest gini index of 9 counties in 2023, at 54.3 index. Northeastern Connecticut Planning Region had the lowest, at 40.5 index. The median was 46.8 index and the figure for Connecticut was 49.8 index. Source: the U.S. Census Bureau.

Highest54.3Western Connecticut Planning Region
Lowest40.5Northeastern Connecticut Planning Region
Median46.89 counties
Connecticut49.8History

All counties, 2023

CSVChart (SVG)

Western Connecticut Planning Regi…Western Connecticut Planning Region: 54.3 index54.3Greater Bridgeport Planning RegionGreater Bridgeport Planning Region: 52 index52Northwest Hills Planning RegionNorthwest Hills Planning Region: 48.2 index48.2South Central Connecticut Plannin…South Central Connecticut Planning Region: 47.8 index47.8Capitol Planning RegionCapitol Planning Region: 46.8 index46.8Naugatuck Valley Planning RegionNaugatuck Valley Planning Region: 46.2 index46.2Lower Connecticut River Valley Pl…Lower Connecticut River Valley Planning Region: 45.9 index45.9Southeastern Connecticut Planning…Southeastern Connecticut Planning Region: 44.3 index44.3Northeastern Connecticut Planning…Northeastern Connecticut Planning Region: 40.5 index40.5
index. Source: U.S. Census Bureau. Retrieved 2026-10-10.

Full ranking

RankCounties2023
index		Change on 2022
1Western Connecticut Planning Region54.3-0.3
2Greater Bridgeport Planning Region52+0.5
3Northwest Hills Planning Region48.2+0.1
4South Central Connecticut Planning Region47.8-0.4
5Capitol Planning Region46.8-0.4
6Naugatuck Valley Planning Region46.2-0.2
7Lower Connecticut River Valley Planning Region45.9+0.8
8Southeastern Connecticut Planning Region44.3+0.6
9Northeastern Connecticut Planning Region40.5-0.1

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?

Western Connecticut Planning Region, with 54.3 index in 2023, according to the U.S. Census Bureau.

Which county has the lowest gini index?

Northeastern Connecticut Planning Region, with 40.5 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 Connecticut: more rankings