RANKING · 1990 CENSUS · 24 SHOWN OF 24

Oldest by median age, Maryland counties · 1990

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, MDMD38,23839.7−8%

02Worcester County, MDMD54,45938.0−12%

03Allegany County, MDMD66,84837.7−4%

04Dorchester County, MDMD33,62837.0−9%

05Kent County, MDMD19,56536.7−11%

06Queen Anne's County, MDMD54,44835.6−8%

07Baltimore County, MDMD847,65035.2−7%

08Washington County, MDMD157,73134.5−8%

09Caroline County, MDMD34,11634.4−7%

10Somerset County, MDMD24,97334.3−6%

11Montgomery County, MDMD1,074,58234.0−8%

12Garrett County, MDMD28,37033.8−12%

13Carroll County, MDMD176,67733.4−10%

14Wicomico County, MDMD106,89933.3−7%

15Anne Arundel County, MDMD603,38032.8−9%

16Cecil County, MDMD107,13132.8−8%

17Baltimore, MDMD569,99732.7−7%

18Calvert County, MDMD94,48432.7−9%

19Howard County, MDMD339,18332.3−9%

20Frederick County, MDMD302,88332.3−9%

21Harford County, MDMD266,44632.2−11%

22Prince George's County, MDMD970,37431.0−7%

23Charles County, MDMD176,59330.2−13%

24St. Mary's County, MDMD116,69229.6−13%

SHOWING 1–24 OF 24

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