RANKING · 1990 CENSUS · 24 SHOWN OF 24

Most racially diverse, Maryland counties · 1990

Maryland counties ranked by the CensusEasy Diversity Score (0 to 100), the chance two random residents are of a different race or ethnicity (1990 ACS). This list covers the 24 counties in Maryland that qualify, ranked against each other statewide. The median across all 24 is 37.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

RANKPLACESTATEPOPDIVERSITY SCOREVS –

01Prince George's County, MDMD970,37472–

02Baltimore, MDMD569,99763–

03Somerset County, MDMD24,97361–

04Montgomery County, MDMD1,074,58256–

05Dorchester County, MDMD33,62852–

06Wicomico County, MDMD106,89947–

07Kent County, MDMD19,56546–

08Worcester County, MDMD54,45945–

09Charles County, MDMD176,59344–

10Howard County, MDMD339,18339–

11Talbot County, MDMD38,23839–

12Caroline County, MDMD34,11637–

13Calvert County, MDMD94,48437–

14St. Mary's County, MDMD116,69235–

15Baltimore County, MDMD847,65034–

16Anne Arundel County, MDMD603,38034–

17Queen Anne's County, MDMD54,44828–

18Harford County, MDMD266,44626–

19Frederick County, MDMD302,88317–

20Washington County, MDMD157,73117–

21Cecil County, MDMD107,13114–

22Carroll County, MDMD176,6778–

23Allegany County, MDMD66,8487–

24Garrett County, MDMD28,3702–

SHOWING 1–24 OF 24

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS