RANKING · 1990 CENSUS · 16 SHOWN OF 16

Most sparsely populated, Delaware cities · 1990

Delaware cities with the fewest residents per square mile (2023). This list covers the 16 cities in Delaware that qualify, ranked against each other statewide.

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SAME RANKING BYCounties States Metros

RELATEDLargest by population Fastest growing Fastest shrinking Most densely populated Best broadband access Worst broadband access

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 2000

01Middletown, DEDE25,798302−38%

02Millsboro, DEDE7,890322−30%

03Milford, DEDE14,723620−9%

04Georgetown, DEDE8,291743−20%

05Smyrna, DEDE13,340816−8%

06Seaford, DEDE9,1651,116−15%

07Dover, DEDE40,5921,156−14%

08New Castle, DEDE5,7261,391−1%

09Newark, DEDE30,3592,649−12%

10Edgemoor, DEDE6,3493,052−2%

11Pike Creek, DEDE7,1293,779−49%

12Brookside, DEDE15,1153,943+3%

13Claymont, DEDE8,7864,556+6%

14Wilmington Manor, DEDE8,2145,244+4%

15Elsmere, DEDE6,1966,013+2%

16Wilmington, DEDE73,5126,565−2%

SHOWING 1–16 OF 16

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