RANKING · 2020 CENSUS · 24 SHOWN OF 24

Oldest by median age, Maryland counties · 2020

Maryland counties ranked by median age of residents (2023 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

RELATEDYoungest by median age Most foreign-born residents Highest uninsured rate Most women Most men Highest disability rate

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Talbot County, MDMD38,23850.7+17%

02Worcester County, MDMD54,45950.5+17%

03Kent County, MDMD19,56549.2+19%

04Garrett County, MDMD28,37046.8+22%

05Dorchester County, MDMD33,62845.1+11%

06Queen Anne's County, MDMD54,44844.7+15%

07Allegany County, MDMD66,84843.8+12%

08Carroll County, MDMD176,67742.1+14%

09Washington County, MDMD157,73141.0+10%

10Calvert County, MDMD94,48440.9+14%

11Harford County, MDMD266,44640.8+13%

12Cecil County, MDMD107,13140.7+15%

13Caroline County, MDMD34,11640.0+8%

14Somerset County, MDMD24,97339.8+9%

15Montgomery County, MDMD1,074,58239.5+7%

16Baltimore County, MDMD847,65039.3+4%

17Howard County, MDMD339,18339.0+10%

18Anne Arundel County, MDMD603,38038.8+8%

19Charles County, MDMD176,59338.8+12%

20Frederick County, MDMD302,88338.7+9%

21Wicomico County, MDMD106,89937.9+6%

22St. Mary's County, MDMD116,69237.1+8%

23Prince George's County, MDMD970,37436.7+10%

24Baltimore, MDMD569,99735.5+1%

SHOWING 1–24 OF 24

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES