RANKING · 2025 ESTIMATES · 24 SHOWN OF 24

Fastest shrinking, Maryland counties

Maryland counties with the steepest population decline from the 2020 census to 2025. This list covers the 24 counties in Maryland that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Baltimore, MDMD569,997-2.7%−77%

02Allegany County, MDMD66,848-1.8%+8552%

03Garrett County, MDMD28,370-1.5%−125%

04Baltimore County, MDMD847,650-0.8%−109%

05Prince George's County, MDMD970,374+0.3%−97%

06Montgomery County, MDMD1,074,582+1.2%−92%

07Somerset County, MDMD24,973+1.4%−74%

08Calvert County, MDMD94,484+1.8%−96%

09Talbot County, MDMD38,238+1.9%−82%

10Kent County, MDMD19,565+1.9%−75%

11Washington County, MDMD157,731+2.0%−77%

12Howard County, MDMD339,183+2.1%−94%

13Harford County, MDMD266,446+2.1%−89%

14Carroll County, MDMD176,677+2.2%−90%

15Caroline County, MDMD34,116+2.5%−76%

16St. Mary's County, MDMD116,692+2.6%−81%

17Anne Arundel County, MDMD603,380+2.6%−82%

18Wicomico County, MDMD106,899+3.2%−77%

19Cecil County, MDMD107,131+3.3%−84%

20Dorchester County, MDMD33,628+3.4%+133%

21Worcester County, MDMD54,459+3.8%−88%

22Charles County, MDMD176,593+6.0%−69%

23Queen Anne's County, MDMD54,448+9.2%−53%

24Frederick County, MDMD302,883+11.5%−62%

SHOWING 1–24 OF 24

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU POPULATION ESTIMATES