RANKING · 2025 ESTIMATES · 24 SHOWN OF 24

Most population lost, Maryland counties

Maryland counties that lost the most residents from the 2020 census to 2025, by raw count of people rather than percentage. This list covers the 24 counties in Maryland that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Baltimore, MDMD569,997-15,711−81%

02Baltimore County, MDMD847,650-6,885−111%

03Allegany County, MDMD66,848-1,258+7763%

04Garrett County, MDMD28,370-436−126%

05Somerset County, MDMD24,973+353−73%

06Kent County, MDMD19,565+367−73%

07Talbot County, MDMD38,238+712−78%

08Caroline County, MDMD34,116+823−70%

09Dorchester County, MDMD33,628+1,097+150%

10Calvert County, MDMD94,484+1,701−93%

11Worcester County, MDMD54,459+1,999−83%

12St. Mary's County, MDMD116,692+2,915−72%

13Washington County, MDMD157,731+3,026−71%

14Prince George's County, MDMD970,374+3,173−96%

15Wicomico County, MDMD106,899+3,311−68%

16Cecil County, MDMD107,131+3,406−77%

17Carroll County, MDMD176,677+3,786−86%

18Queen Anne's County, MDMD54,448+4,574−31%

19Harford County, MDMD266,446+5,522−85%

20Howard County, MDMD339,183+6,866−89%

21Charles County, MDMD176,593+9,976−49%

22Montgomery County, MDMD1,074,582+12,521−89%

23Anne Arundel County, MDMD603,380+15,119−76%

24Frederick County, MDMD302,883+31,166−31%

SHOWING 1–24 OF 24

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