RANKING · 2020 CENSUS · 24 SHOWN OF 24

Youngest by median age, Maryland counties · 2020

Maryland counties with the youngest median age (2020 ACS). This list covers the 24 counties in Maryland that qualify, ranked against each other statewide. The median across all 24 is 40.7.

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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

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Baltimore, MDMD569,99735.5+1%

02Prince George's County, MDMD970,37436.7+10%

03St. Mary's County, MDMD116,69237.1+8%

04Wicomico County, MDMD106,89937.9+6%

05Frederick County, MDMD302,88338.7+9%

06Anne Arundel County, MDMD603,38038.8+8%

07Charles County, MDMD176,59338.8+12%

08Howard County, MDMD339,18339.0+10%

09Baltimore County, MDMD847,65039.3+4%

10Montgomery County, MDMD1,074,58239.5+7%

11Somerset County, MDMD24,97339.8+9%

12Caroline County, MDMD34,11640.0+8%

13Cecil County, MDMD107,13140.7+15%

14Harford County, MDMD266,44640.8+13%

15Calvert County, MDMD94,48440.9+14%

16Washington County, MDMD157,73141.0+10%

17Carroll County, MDMD176,67742.1+14%

18Allegany County, MDMD66,84843.8+12%

19Queen Anne's County, MDMD54,44844.7+15%

20Dorchester County, MDMD33,62845.1+11%

21Garrett County, MDMD28,37046.8+22%

22Kent County, MDMD19,56549.2+19%

23Worcester County, MDMD54,45950.5+17%

24Talbot County, MDMD38,23850.7+17%

SHOWING 1–24 OF 24

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