RANKING · 2010 CENSUS · 24 SHOWN OF 24

Fastest shrinking, Maryland counties · 2010

Maryland counties with the steepest population decline since the prior decennial census. This list covers the 24 counties in Maryland that qualify, ranked against each other statewide.

Flip the list · Fastest growing, US counties →

MarylandAll states All rankings

SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Most densely populated Most sparsely populated Best broadband access Worst broadband access

YEAR2000 2010 2020

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Baltimore, MDMD569,997-4.6%−60%

02Allegany County, MDMD66,848+0.2%−1081%

03Garrett County, MDMD28,370+0.8%−86%

04Kent County, MDMD19,565+5.2%−31%

05Dorchester County, MDMD33,628+6.3%+337%

06Baltimore County, MDMD847,650+6.7%−25%

07Somerset County, MDMD24,973+7.0%+25%

08Prince George's County, MDMD970,374+7.7%−22%

09Anne Arundel County, MDMD603,380+9.8%−33%

10Worcester County, MDMD54,459+10.6%−68%

11Carroll County, MDMD176,677+10.8%−52%

12Caroline County, MDMD34,116+11.1%+9%

13Montgomery County, MDMD1,074,582+11.3%−27%

14Talbot County, MDMD38,238+11.7%+10%

15Washington County, MDMD157,731+11.8%+36%

16Harford County, MDMD266,446+12.0%−40%

17Howard County, MDMD339,183+15.8%−51%

18Wicomico County, MDMD106,899+16.6%+20%

19Cecil County, MDMD107,131+17.6%−14%

20Queen Anne's County, MDMD54,448+17.8%−8%

21Calvert County, MDMD94,484+19.0%−58%

22Frederick County, MDMD302,883+19.5%−35%

23Charles County, MDMD176,593+21.6%+13%

24St. Mary's County, MDMD116,692+22.0%+63%

SHOWING 1–24 OF 24

Download CSV (full list, 24 rows)

UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES