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. The median across all 24 is +2.1%. Biggest climber in the top 100 since 2020: Prince George's County, MD, up 16 places to #5.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01▲2Baltimore, MDMD569,997-2.7%+8.8 pts

02▼1Allegany County, MDMD66,848-1.8%−1.8 pts

03▲2Garrett County, MDMD28,370-1.5%−7.6 pts

04▲12Baltimore County, MDMD847,650-0.8%−9.8 pts

05▲16Prince George's County, MDMD970,374+0.3%−9.6 pts

06▲13Montgomery County, MDMD1,074,582+1.2%−14.2 pts

07▼5Somerset County, MDMD24,973+1.4%−4.1 pts

08▲5Calvert County, MDMD94,484+1.8%−43.3 pts

09▼3Talbot County, MDMD38,238+1.9%−8.8 pts

10▼6Kent County, MDMD19,565+1.9%−5.7 pts

11▲4Washington County, MDMD157,731+2.0%−6.7 pts

12▲11Howard County, MDMD339,183+2.1%−30.2 pts

13▲4Harford County, MDMD266,446+2.1%−17.9 pts

14▼3Carroll County, MDMD176,677+2.2%−20.1 pts

15▼7Caroline County, MDMD34,116+2.5%−7.7 pts

16▲2St. Mary's County, MDMD116,692+2.6%−10.9 pts

17▲3Anne Arundel County, MDMD603,380+2.6%−12.0 pts

18▼4Wicomico County, MDMD106,899+3.2%−10.7 pts

19▼9Cecil County, MDMD107,131+3.3%−17.2 pts

20▼13Dorchester County, MDMD33,628+3.4%+1.9 pts

21▼12Worcester County, MDMD54,459+3.8%−29.1 pts

22Charles County, MDMD176,593+6.0%−13.2 pts

23▼11Queen Anne's County, MDMD54,448+9.2%−10.3 pts

24Frederick County, MDMD302,883+11.5%−18.5 pts

SHOWING 1–24 OF 24

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES