Data / Rankings / Gini index / Counties in Maryland

Counties in Maryland by gini index

Baltimore city had the highest gini index of 24 counties in 2021, at 51.1 index. Calvert County had the lowest, at 37.9 index. The median was 44.1 index and the figure for Maryland was 45.5 index. Source: the U.S. Census Bureau.

Highest51.1Baltimore city
Lowest37.9Calvert County
Median44.124 counties
Maryland45.5History

All counties, 2021

CSVChart (SVG)

Baltimore cityBaltimore city: 51.1 index51.1Talbot CountyTalbot County: 49.8 index49.8Worcester CountyWorcester County: 48 index48Garrett CountyGarrett County: 47 index47Montgomery CountyMontgomery County: 46.8 index46.8Dorchester CountyDorchester County: 46.7 index46.7Kent CountyKent County: 45.6 index45.6Baltimore CountyBaltimore County: 45.5 index45.5Caroline CountyCaroline County: 44.9 index44.9Somerset CountySomerset County: 44.9 index44.9Washington CountyWashington County: 44.6 index44.6Wicomico CountyWicomico County: 44.4 index44.4Allegany CountyAllegany County: 43.9 index43.9Queen Anne's CountyQueen Anne's County: 43.8 index43.8Cecil CountyCecil County: 41.7 index41.7Anne Arundel CountyAnne Arundel County: 41.6 index41.6Howard CountyHoward County: 41.5 index41.5Prince George's CountyPrince George's County: 40.8 index40.8Harford CountyHarford County: 40.7 index40.7Carroll CountyCarroll County: 40.2 index40.2St. Mary's CountySt. Mary's County: 40 index40Frederick CountyFrederick County: 39.7 index39.7Charles CountyCharles County: 38.2 index38.2Calvert CountyCalvert County: 37.9 index37.9
index. Source: U.S. Census Bureau. Retrieved 2026-10-10.

Full ranking

RankCounties2021
index
1Baltimore city51.1
2Talbot County49.8
3Worcester County48
4Garrett County47
5Montgomery County46.8
6Dorchester County46.7
7Kent County45.6
8Baltimore County45.5
9Caroline County44.9
10Somerset County44.9
11Washington County44.6
12Wicomico County44.4
13Allegany County43.9
14Queen Anne's County43.8
15Cecil County41.7
16Anne Arundel County41.6
17Howard County41.5
18Prince George's County40.8
19Harford County40.7
20Carroll County40.2
21St. Mary's County40
22Frederick County39.7
23Charles County38.2
24Calvert County37.9

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?

Baltimore city, with 51.1 index in 2021, according to the U.S. Census Bureau.

Which county has the lowest gini index?

Calvert County, with 37.9 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 Maryland: more rankings