RANKING · 1990 CENSUS · 24 SHOWN OF 24

Least racially diverse, Maryland counties · 1990

Maryland counties with the lowest CensusEasy Diversity Score, where most residents share the same race or ethnicity (2023 ACS). This list covers the 24 counties in Maryland that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPDIVERSITY SCOREVS 2000

01Garrett County, MDMD28,3702−20%

02Allegany County, MDMD66,8487−52%

03Carroll County, MDMD176,6778−15%

04Cecil County, MDMD107,13115+1%

05Frederick County, MDMD302,88318−26%

06Washington County, MDMD157,73118−20%

07Harford County, MDMD266,44627−5%

08Queen Anne's County, MDMD54,44828+16%

09Anne Arundel County, MDMD603,38035−13%

10Baltimore County, MDMD847,65035−31%

11St. Mary's County, MDMD116,69236−7%

12Calvert County, MDMD94,48437+9%

13Caroline County, MDMD34,11638−2%

14Talbot County, MDMD38,23839+2%

15Howard County, MDMD339,18340−24%

16Charles County, MDMD176,59345−21%

17Worcester County, MDMD54,45945+16%

18Kent County, MDMD19,56546+6%

19Wicomico County, MDMD106,89947−10%

20Dorchester County, MDMD33,62853−3%

21Montgomery County, MDMD1,074,58258−19%

22Somerset County, MDMD24,97362−2%

23Baltimore, MDMD569,99763+7%

24Prince George's County, MDMD970,37473+12%

SHOWING 1–24 OF 24

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES