RANKING · 2024 ACS · 24 SHOWN OF 24

Oldest by median age, Maryland counties

Maryland counties ranked by median age of residents (2024 ACS). This list covers the 24 counties in Maryland that qualify, ranked against each other statewide.

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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

01Talbot County, MDMD38,23851.2+18%

02Worcester County, MDMD54,45950.7+18%

03Kent County, MDMD19,56548.6+18%

04Garrett County, MDMD28,37048.3+26%

05Queen Anne's County, MDMD54,44844.7+15%

06Dorchester County, MDMD33,62843.5+7%

07Carroll County, MDMD176,67741.3+12%

08Allegany County, MDMD66,84841.2+5%

09Calvert County, MDMD94,48440.8+14%

10Washington County, MDMD157,73140.7+9%

11Cecil County, MDMD107,13140.6+14%

12Harford County, MDMD266,44640.5+12%

13Montgomery County, MDMD1,074,58240.2+9%

14Caroline County, MDMD34,11639.9+8%

15Howard County, MDMD339,18339.8+12%

16Baltimore County, MDMD847,65039.7+5%

17Frederick County, MDMD302,88339.0+10%

18Anne Arundel County, MDMD603,38039.0+8%

19Charles County, MDMD176,59338.9+12%

20Prince George's County, MDMD970,37438.5+16%

21Somerset County, MDMD24,97338.1+4%

22St. Mary's County, MDMD116,69237.2+9%

23Wicomico County, MDMD106,89936.2+1%

24Baltimore, MDMD569,99736.2+3%

SHOWING 1–24 OF 24

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES