RANKING · 2010 CENSUS · 20 SHOWN OF 20

Most population gained, Delaware cities · 2010

Delaware cities that added the most residents from the 2000 census to 2010, by raw count of people rather than percentage. This list covers the 20 cities in Delaware that qualify, ranked against each other statewide. The median across all 20 is +625.

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DelawareAll statesPop > 5KAll rankings

SAME RANKING BYCounties States Metros

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

YEAR2000 2010 2020 2024

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Middletown, DEDE25,798+12,710+446%

02Smyrna, DEDE13,340+4,344+870%

03Dover, DEDE40,592+3,912−15%

04Newark, DEDE30,359+2,907−16%

05Milford, DEDE14,723+2,827+353%

06Georgetown, DEDE8,291+1,779+95%

07Bear, DEDE22,370+1,778–

08Millsboro, DEDE7,890+1,517+112%

09Glasgow, DEDE15,546+1,463–

10Hockessin, DEDE13,439+625–

11New Castle, DEDE5,726+423+1592%

12Elsmere, DEDE6,196+331−345%

13Seaford, DEDE9,165+229−77%

14North Star, DEDE7,834-297–

15Edgemoor, DEDE6,349-315−327%

16Wilmington Manor, DEDE8,214-373+22%

17Brookside, DEDE15,115-453−10%

18Claymont, DEDE8,786-967+67%

19Wilmington, DEDE73,512-1,813−260%

20Pike Creek, DEDE7,129-11,853−224%

SHOWING 1–20 OF 20

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS