RANKING · 2020 CENSUS · 21 SHOWN OF 21

Fastest shrinking, Delaware cities · 2020

Delaware cities with the steepest population decline from the 2010 census to 2020. This list covers the 21 cities in Delaware that qualify, ranked against each other statewide.

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DelawareAll statesPop > 5KAll rankings

SAME RANKING BYCounties States Metros

YEAR2000 2010 2020 2024

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Newark, DEDE30,359-2.7%−16.5 pts

02Pike Creek, DEDE7,129-1.1%−95.5 pts

03Hockessin, DEDE13,439-0.4%–

04Wilmington, DEDE73,512+0.1%−1.5 pts

05North Star, DEDE7,834+1.0%–

06Elsmere, DEDE6,196+1.6%+3.9 pts

07Wilmington Manor, DEDE8,214+3.5%+7.0 pts

08Pike Creek Valley, DEDE12,431+4.2%–

09Brookside, DEDE15,115+4.3%+7.6 pts

10New Castle, DEDE5,726+5.0%+4.5 pts

11Glasgow, DEDE15,546+6.9%–

12Dover, DEDE40,592+9.3%−7.4 pts

13Georgetown, DEDE8,291+11.1%−13.3 pts

14Seaford, DEDE9,165+14.9%−2.8 pts

15Edgemoor, DEDE6,349+16.9%+14.5 pts

16Milford, DEDE14,723+17.1%+6.8 pts

17Bear, DEDE22,370+19.0%–

18Claymont, DEDE8,786+19.9%+25.8 pts

19Middletown, DEDE25,798+22.9%−37.8 pts

20Smyrna, DEDE13,340+28.5%+20.0 pts

21Millsboro, DEDE7,890+77.0%+33.4 pts

SHOWING 1–21 OF 21

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