RANKING · 2010 CENSUS · 21 SHOWN OF 21

Largest by population, Delaware cities · 2010

The most populous us cities as of the 2023 estimates. This list covers the 21 cities in Delaware that qualify, ranked against each other statewide.

DelawareAll statesPop > 5KAll rankings

SAME RANKING BYCounties States Metros ZIP codes

RELATEDFastest growing Fastest shrinking Most densely populated Most sparsely populated Best broadband access Worst broadband access

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPTOTAL POPULATIONVS 2000

01Wilmington, DEDE73,51270,851−2%

02Dover, DEDE40,59236,047+12%

03Newark, DEDE30,35931,454+10%

04Bear, DEDE22,37019,371+10%

05Middletown, DEDE25,79818,871+206%

06Brookside, DEDE15,11514,353−3%

07Glasgow, DEDE15,54614,303+11%

08Hockessin, DEDE13,43913,527+5%

09Pike Creek Valley, DEDE12,43111,217–

10Smyrna, DEDE13,34010,023+76%

11Milford, DEDE14,7239,559+42%

12Claymont, DEDE8,7868,253−10%

13North Star, DEDE7,8347,980−4%

14Pike Creek, DEDE7,1297,898−60%

15Wilmington Manor, DEDE8,2147,889−5%

16Seaford, DEDE9,1656,928+3%

17Georgetown, DEDE8,2916,422+38%

18Elsmere, DEDE6,1966,131+6%

19Edgemoor, DEDE6,3495,677−5%

20New Castle, DEDE5,7265,285+9%

21Millsboro, DEDE7,8903,877+64%

SHOWING 1–21 OF 21

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