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 (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 –

01Garrett County, MDMD28,3702–

02Allegany County, MDMD66,8487–

03Carroll County, MDMD176,6778–

04Cecil County, MDMD107,13114–

05Washington County, MDMD157,73117–

06Frederick County, MDMD302,88317–

07Harford County, MDMD266,44626–

08Queen Anne's County, MDMD54,44828–

09Anne Arundel County, MDMD603,38034–

10Baltimore County, MDMD847,65034–

11St. Mary's County, MDMD116,69235–

12Calvert County, MDMD94,48437–

13Caroline County, MDMD34,11637–

14Talbot County, MDMD38,23839–

15Howard County, MDMD339,18339–

16Charles County, MDMD176,59344–

17Worcester County, MDMD54,45945–

18Kent County, MDMD19,56546–

19Wicomico County, MDMD106,89947–

20Dorchester County, MDMD33,62852–

21Montgomery County, MDMD1,074,58256–

22Somerset County, MDMD24,97361–

23Baltimore, MDMD569,99763–

24Prince George's County, MDMD970,37472–

SHOWING 1–24 OF 24

Download CSV (full list, 24 rows)How this score is calculated

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