RANKING · 2025 ESTIMATES · 24 SHOWN OF 24

Fastest growing, Maryland counties

Maryland counties ranked by population growth from the 2020 census to 2025. This list covers the 24 counties in Maryland that qualify, ranked against each other statewide.

Flip the list · Fastest shrinking, US counties →

MarylandAll states All rankings

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+11.5%−62%

02Queen Anne's County, MDMD54,448+9.2%−53%

03Charles County, MDMD176,593+6.0%−69%

04Worcester County, MDMD54,459+3.8%−88%

05Dorchester County, MDMD33,628+3.4%+133%

06Cecil County, MDMD107,131+3.3%−84%

07Wicomico County, MDMD106,899+3.2%−77%

08Anne Arundel County, MDMD603,380+2.6%−82%

09St. Mary's County, MDMD116,692+2.6%−81%

10Caroline County, MDMD34,116+2.5%−76%

11Carroll County, MDMD176,677+2.2%−90%

12Harford County, MDMD266,446+2.1%−89%

13Howard County, MDMD339,183+2.1%−94%

14Washington County, MDMD157,731+2.0%−77%

15Kent County, MDMD19,565+1.9%−75%

16Talbot County, MDMD38,238+1.9%−82%

17Calvert County, MDMD94,484+1.8%−96%

18Somerset County, MDMD24,973+1.4%−74%

19Montgomery County, MDMD1,074,582+1.2%−92%

20Prince George's County, MDMD970,374+0.3%−97%

21Baltimore County, MDMD847,650-0.8%−109%

22Garrett County, MDMD28,370-1.5%−125%

23Allegany County, MDMD66,848-1.8%+8552%

24Baltimore, MDMD569,997-2.7%−77%

SHOWING 1–24 OF 24

Download CSV (full list, 24 rows)

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