RANKING · 2010 CENSUS · 24 SHOWN OF 24

Oldest housing stock, Maryland counties · 2010

Maryland counties ranked by oldest median year of construction (2010 ACS). This list covers the 24 counties in Maryland that qualify, ranked against each other statewide. The median across all 24 is 1980.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS 1990

01Baltimore, MDMD569,99719460%

02Allegany County, MDMD66,84819550%

03Dorchester County, MDMD33,62819680%

04Washington County, MDMD157,7311970+1%

05Baltimore County, MDMD847,65019700%

06Somerset County, MDMD24,97319710%

07Kent County, MDMD19,5651972+1%

08Prince George's County, MDMD970,37419720%

09Caroline County, MDMD34,1161976+1%

10Montgomery County, MDMD1,074,58219770%

11Garrett County, MDMD28,37019780%

12Anne Arundel County, MDMD603,38019790%

13Talbot County, MDMD38,2381980+1%

14Wicomico County, MDMD106,8991980+1%

15Carroll County, MDMD176,67719810%

16Worcester County, MDMD54,45919820%

17Cecil County, MDMD107,1311982+1%

18Queen Anne's County, MDMD54,4481983+1%

19Frederick County, MDMD302,8831983+1%

20Harford County, MDMD266,4461983+1%

21Howard County, MDMD339,18319850%

22St. Mary's County, MDMD116,6921985+1%

23Charles County, MDMD176,5931986+1%

24Calvert County, MDMD94,4841988+1%

SHOWING 1–24 OF 24

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