RANKING · 2020 CENSUS · 21 SHOWN OF 21

Fastest shrinking, Delaware cities

Delaware cities with the steepest population decline since the prior decennial census. This list covers the 21 cities in Delaware that qualify, ranked against each other statewide.

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SAME RANKING BYCounties States Metros

YEAR2000 2010 2020

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Newark, DEDE30,359-2.7%−120%

02Pike Creek, DEDE7,129-1.1%−101%

03Hockessin, DEDE13,439-0.4%–

04Wilmington, DEDE73,512+0.1%−96%

05North Star, DEDE7,834+1.0%–

06Elsmere, DEDE6,196+1.6%−170%

07Wilmington Manor, DEDE8,214+3.5%−197%

08Pike Creek Valley, DEDE12,431+4.2%–

09Brookside, DEDE15,115+4.3%−232%

10New Castle, DEDE5,726+5.0%+874%

11Glasgow, DEDE15,546+6.9%–

12Dover, DEDE40,592+9.3%−44%

13Georgetown, DEDE8,291+11.1%−55%

14Seaford, DEDE9,165+14.9%−16%

15Edgemoor, DEDE6,349+16.9%+611%

16Milford, DEDE14,723+17.1%+67%

17Bear, DEDE22,370+19.0%–

18Claymont, DEDE8,786+19.9%−436%

19Middletown, DEDE25,798+22.9%−62%

20Smyrna, DEDE13,340+28.5%+233%

21Millsboro, DEDE7,890+77.0%+76%

SHOWING 1–21 OF 21

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