RANKING · 2024 ACS · 24 SHOWN OF 24

Youngest by median age, Maryland counties

Maryland counties with the youngest median age (2024 ACS). This list covers the 24 counties in Maryland that qualify, ranked against each other statewide. The median across all 24 is 40.5. Biggest climber in the top 100 since 2020: Somerset County, MD, up 7 places to #4.

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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

01▲3Wicomico County, MDMD106,89936.2+1%

02▼1Baltimore, MDMD569,99736.2+3%

03St. Mary's County, MDMD116,69237.2+9%

04▲7Somerset County, MDMD24,97338.1+4%

05▼3Prince George's County, MDMD970,37438.5+16%

06▲1Charles County, MDMD176,59338.9+12%

07▼1Anne Arundel County, MDMD603,38039.0+8%

08▼3Frederick County, MDMD302,88339.0+10%

09Baltimore County, MDMD847,65039.7+5%

10▼2Howard County, MDMD339,18339.8+12%

11▲1Caroline County, MDMD34,11639.9+8%

12▼2Montgomery County, MDMD1,074,58240.2+9%

13▲1Harford County, MDMD266,44640.5+12%

14▼1Cecil County, MDMD107,13140.6+14%

15▲1Washington County, MDMD157,73140.7+9%

16▼1Calvert County, MDMD94,48440.8+14%

17▲1Allegany County, MDMD66,84841.2+5%

18▼1Carroll County, MDMD176,67741.3+12%

19▲1Dorchester County, MDMD33,62843.5+7%

20▼1Queen Anne's County, MDMD54,44844.7+15%

21Garrett County, MDMD28,37048.3+26%

22Kent County, MDMD19,56548.6+18%

23Worcester County, MDMD54,45950.7+18%

24Talbot County, MDMD38,23851.2+18%

SHOWING 1–24 OF 24

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES