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%+8.8 pts

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

23Queen 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 2026-08-08 · DATA: US CENSUS BUREAU POPULATION ESTIMATES