RANKING · 2020 CENSUS · 24 SHOWN OF 24

Fastest growing, Maryland counties · 2020

Maryland counties ranked by population growth from the 2010 census to 2020. 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

01Frederick County, MDMD302,883+16.4%−13.6 pts

02Howard County, MDMD339,183+15.8%−16.5 pts

03Charles County, MDMD176,593+13.7%−5.5 pts

04Prince George's County, MDMD970,374+12.0%+2.1 pts

05Anne Arundel County, MDMD603,380+9.4%−5.2 pts

06Montgomery County, MDMD1,074,582+9.3%−6.1 pts

07St. Mary's County, MDMD116,692+8.2%−5.3 pts

08Harford County, MDMD266,446+6.6%−13.4 pts

09Baltimore County, MDMD847,650+6.1%−2.8 pts

10Washington County, MDMD157,731+4.9%−3.7 pts

11Wicomico County, MDMD106,899+4.9%−8.9 pts

12Calvert County, MDMD94,484+4.6%−40.6 pts

13Queen Anne's County, MDMD54,448+4.3%−15.1 pts

14Carroll County, MDMD176,677+3.4%−18.9 pts

15Cecil County, MDMD107,131+2.6%−17.9 pts

16Worcester County, MDMD54,459+2.0%−30.9 pts

17Caroline County, MDMD34,116+0.7%−9.4 pts

18Dorchester County, MDMD33,628-0.3%−1.7 pts

19Talbot County, MDMD38,238-0.7%−11.4 pts

20Garrett County, MDMD28,370-4.3%−10.4 pts

21Kent County, MDMD19,565-4.9%−12.5 pts

22Baltimore, MDMD569,997-5.7%+5.9 pts

23Somerset County, MDMD24,973-7.0%−12.6 pts

24Allegany County, MDMD66,848-9.3%−9.3 pts

SHOWING 1–24 OF 24

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