RANKING · 2010 CENSUS · 24 SHOWN OF 24

Fastest growing, Maryland counties · 2010

Maryland counties ranked by population growth from the 2000 census to 2010. 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 shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01St. Mary's County, MDMD116,692+22.0%+8.5 pts

02Charles County, MDMD176,593+21.6%+2.4 pts

03Frederick County, MDMD302,883+19.5%−10.5 pts

04Calvert County, MDMD94,484+19.0%−26.1 pts

05Queen Anne's County, MDMD54,448+17.8%−1.6 pts

06Cecil County, MDMD107,131+17.6%−2.8 pts

07Wicomico County, MDMD106,899+16.6%+2.8 pts

08Howard County, MDMD339,183+15.8%−16.5 pts

09Harford County, MDMD266,446+12.0%−8.0 pts

10Washington County, MDMD157,731+11.8%+3.1 pts

11Talbot County, MDMD38,238+11.7%+1.1 pts

12Montgomery County, MDMD1,074,582+11.3%−4.1 pts

13Caroline County, MDMD34,116+11.1%+0.9 pts

14Carroll County, MDMD176,677+10.8%−11.6 pts

15Worcester County, MDMD54,459+10.6%−22.3 pts

16Anne Arundel County, MDMD603,380+9.8%−4.8 pts

17Prince George's County, MDMD970,374+7.7%−2.2 pts

18Somerset County, MDMD24,973+7.0%+1.4 pts

19Baltimore County, MDMD847,650+6.7%−2.3 pts

20Dorchester County, MDMD33,628+6.3%+4.9 pts

21Kent County, MDMD19,565+5.2%−2.4 pts

22Garrett County, MDMD28,370+0.8%−5.2 pts

23Allegany County, MDMD66,848+0.2%+0.2 pts

24Baltimore, MDMD569,997-4.6%+6.9 pts

SHOWING 1–24 OF 24

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS