RANKING · 2000 CENSUS · 24 SHOWN OF 24

Most population gained, Maryland counties · 2000

Maryland counties that added the most residents from the 1990 census to 2000, 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 –

01Montgomery County, MDMD1,074,582+116,314–

02Prince George's County, MDMD970,374+72,247–

03Anne Arundel County, MDMD603,380+62,417–

04Baltimore County, MDMD847,650+62,158–

05Howard County, MDMD339,183+60,514–

06Frederick County, MDMD302,883+45,069–

07Harford County, MDMD266,446+36,458–

08Carroll County, MDMD176,677+27,525–

09Calvert County, MDMD94,484+23,191–

10Charles County, MDMD176,593+19,392–

11Cecil County, MDMD107,131+14,604–

12Worcester County, MDMD54,459+11,515–

13Washington County, MDMD157,731+10,530–

14Wicomico County, MDMD106,899+10,305–

15St. Mary's County, MDMD116,692+10,237–

16Queen Anne's County, MDMD54,448+6,610–

17Talbot County, MDMD38,238+3,263–

18Caroline County, MDMD34,116+2,737–

19Garrett County, MDMD28,370+1,708–

20Kent County, MDMD19,565+1,355–

21Somerset County, MDMD24,973+1,307–

22Dorchester County, MDMD33,628+438–

23Allegany County, MDMD66,848-16–

24Baltimore, MDMD569,997-84,860–

SHOWING 1–24 OF 24

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS