Data / Rankings / Gini index / Counties in Maine

Counties in Maine by gini index

Aroostook County had the highest gini index of 16 counties in 2021, at 46.2 index. Sagadahoc County had the lowest, at 40.7 index. The median was 44.9 index and the figure for Maine was 45.4 index. Source: the U.S. Census Bureau.

Highest46.2Aroostook County
Lowest40.7Sagadahoc County
Median44.916 counties
Maine45.4History

All counties, 2021

CSVChart (SVG)

Aroostook CountyAroostook County: 46.2 index46.2Franklin CountyFranklin County: 46.1 index46.1Lincoln CountyLincoln County: 45.9 index45.9Somerset CountySomerset County: 45.9 index45.9Washington CountyWashington County: 45.8 index45.8Cumberland CountyCumberland County: 45.7 index45.7Penobscot CountyPenobscot County: 45.3 index45.3Piscataquis CountyPiscataquis County: 45 index45Knox CountyKnox County: 44.8 index44.8Hancock CountyHancock County: 44.7 index44.7Kennebec CountyKennebec County: 43.8 index43.8Waldo CountyWaldo County: 43.4 index43.4Androscoggin CountyAndroscoggin County: 43.2 index43.2Oxford CountyOxford County: 43.1 index43.1York CountyYork County: 42.7 index42.7Sagadahoc CountySagadahoc County: 40.7 index40.7
index. Source: U.S. Census Bureau. Retrieved 2026-10-10.

Full ranking

RankCounties2021
index
1Aroostook County46.2
2Franklin County46.1
3Lincoln County45.9
3Somerset County45.9
5Washington County45.8
6Cumberland County45.7
7Penobscot County45.3
8Piscataquis County45
9Knox County44.8
10Hancock County44.7
11Kennebec County43.8
12Waldo County43.4
13Androscoggin County43.2
14Oxford County43.1
15York County42.7
16Sagadahoc County40.7

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/2021/table-based-SF/data/5YRData/acsdt5y2021-b19083.dat. Retrieved 2026-10-10.

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Questions

Which county has the highest gini index?

Aroostook County, with 46.2 index in 2021, according to the U.S. Census Bureau.

Which county has the lowest gini index?

Sagadahoc County, with 40.7 index in 2021.

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 Maine: more rankings