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. The median across all 24 is 40.5.

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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%

05▲1Queen Anne's County, MDMD54,44844.7+15%

06▼1Dorchester County, MDMD33,62843.5+7%

07▲1Carroll County, MDMD176,67741.3+12%

08▼1Allegany County, MDMD66,84841.2+5%

09▲1Calvert County, MDMD94,48440.8+14%

10▼1Washington County, MDMD157,73140.7+9%

11▲1Cecil County, MDMD107,13140.6+14%

12▼1Harford County, MDMD266,44640.5+12%

13▲2Montgomery County, MDMD1,074,58240.2+9%

14▼1Caroline County, MDMD34,11639.9+8%

15▲2Howard County, MDMD339,18339.8+12%

16Baltimore County, MDMD847,65039.7+5%

17▲1Anne Arundel County, MDMD603,38039.0+8%

18▲2Frederick County, MDMD302,88339.0+10%

19Charles County, MDMD176,59338.9+12%

20▲3Prince George's County, MDMD970,37438.5+16%

21▼7Somerset County, MDMD24,97338.1+4%

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

23▼2Wicomico County, MDMD106,89936.2+1%

24Baltimore, MDMD569,99736.2+3%

SHOWING 1–24 OF 24

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