RANKING · 2025 ESTIMATES · 24 SHOWN OF 24

Most densely populated, Maryland counties

Maryland counties ranked by residents per square mile (2025). This list covers the 24 counties in Maryland that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Fastest shrinking Most population gained Most population lost Most sparsely populated

RANKPLACESTATEPOPPOPULATION DENSITYVS –

01Baltimore, MDMD569,9977,042–

02Montgomery County, MDMD1,074,5822,179–

03Prince George's County, MDMD970,3742,011–

04Anne Arundel County, MDMD603,3801,455–

05Baltimore County, MDMD847,6501,417–

06Howard County, MDMD339,1831,352–

07Harford County, MDMD266,446610–

08Frederick County, MDMD302,883458–

09Calvert County, MDMD94,484443–

10Carroll County, MDMD176,677395–

11Charles County, MDMD176,593386–

12Washington County, MDMD157,731345–

13St. Mary's County, MDMD116,692325–

14Cecil County, MDMD107,131309–

15Wicomico County, MDMD106,899285–

16Allegany County, MDMD66,848158–

17Queen Anne's County, MDMD54,448146–

18Talbot County, MDMD38,238142–

19Worcester County, MDMD54,459116–

20Caroline County, MDMD34,116107–

21Somerset County, MDMD24,97378–

22Kent County, MDMD19,56571–

23Dorchester County, MDMD33,62862–

24Garrett County, MDMD28,37044–

SHOWING 1–24 OF 24

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU POPULATION ESTIMATES