RANKING · 2010 CENSUS · 24 SHOWN OF 24

Oldest by median age, Maryland counties · 2010

Maryland counties ranked by median age of residents (2010 ACS). This list covers the 24 counties in Maryland that qualify, ranked against each other statewide. The median across all 24 is 39.1.

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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

01Worcester County, MDMD54,45948.1+12%

02Talbot County, MDMD38,23847.4+9%

03Kent County, MDMD19,56545.6+10%

04Dorchester County, MDMD33,62843.3+6%

05Garrett County, MDMD28,37042.7+11%

06Queen Anne's County, MDMD54,44842.6+10%

07Carroll County, MDMD176,67741.1+11%

08Allegany County, MDMD66,84840.9+5%

09Calvert County, MDMD94,48440.1+12%

10Washington County, MDMD157,73139.7+6%

11Harford County, MDMD266,44639.4+9%

12Baltimore County, MDMD847,65039.1+4%

13Cecil County, MDMD107,13138.9+10%

14Caroline County, MDMD34,11638.7+5%

15Frederick County, MDMD302,88338.6+8%

16Montgomery County, MDMD1,074,58238.5+5%

17Anne Arundel County, MDMD603,38038.4+7%

18Howard County, MDMD339,18338.4+8%

19Charles County, MDMD176,59337.4+8%

20Somerset County, MDMD24,97336.50%

21St. Mary's County, MDMD116,69236.0+5%

22Wicomico County, MDMD106,89935.70%

23Prince George's County, MDMD970,37434.9+5%

24Baltimore, MDMD569,99734.4−2%

SHOWING 1–24 OF 24

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