RANKING · 2020 CENSUS · 21 SHOWN OF 21

Fastest growing, Delaware cities · 2020

Delaware cities ranked by population growth 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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SAME RANKING BYCounties States Metros

RELATEDLargest by population Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2024

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Millsboro, DEDE7,890+77.0%+76%

02Smyrna, DEDE13,340+28.5%+233%

03Middletown, DEDE25,798+22.9%−62%

04Claymont, DEDE8,786+19.9%−436%

05Bear, DEDE22,370+19.0%–

06Milford, DEDE14,723+17.1%+67%

07Edgemoor, DEDE6,349+16.9%+611%

08Seaford, DEDE9,165+14.9%−16%

09Georgetown, DEDE8,291+11.1%−55%

10Dover, DEDE40,592+9.3%−44%

11Glasgow, DEDE15,546+6.9%–

12New Castle, DEDE5,726+5.0%+874%

13Brookside, DEDE15,115+4.3%−232%

14Pike Creek Valley, DEDE12,431+4.2%–

15Wilmington Manor, DEDE8,214+3.5%−197%

16Elsmere, DEDE6,196+1.6%−170%

17North Star, DEDE7,834+1.0%–

18Wilmington, DEDE73,512+0.1%−96%

19Hockessin, DEDE13,439-0.4%–

20Pike Creek, DEDE7,129-1.1%−101%

21Newark, DEDE30,359-2.7%−120%

SHOWING 1–21 OF 21

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS