Seaford, Delaware

Seaford population, 2020 to 2024

Seaford added 970 residents from July 2020 to July 2024, a change of +12.2%. In the latest year it moved by +214. Among 11 Delaware places of 5,000 or more, that growth ranks 4th; the median place changed by +3.3%. The median place of 5,000+ in Delaware has 13,326 people, so Seaford is 67% of it.

Seaford covers 5.08 square miles of land and 0.05 of water, for 1,762 people per square mile of land. The median Delaware place of 5,000+ has 1,762, so Seaford is close to the typical town.

What county Seaford is in

All of Seaford's residents live in Sussex County, which had 271,134 residents in 2024. Seaford holds 3.3% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Seaford

1 ZIP Code Tabulation Area (ZCTA) overlaps Seaford by at least 10% of the ZCTA's or the city's land: 19973. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Seaford is

The Census internal point of Seaford is at 38.657300, -75.613400. Dover, the capital, is 34.9 miles N in a straight line. The nearest larger place is Salisbury, MD (33,616 people), 19.5 miles away. The nearest city of 100,000 or more is Baltimore, MD, 69.6 miles away.

Daylight in Seaford

At 38.66° N, Seaford gets about 14 h 52 min of daylight around the June solstice and 9 h 28 min around the December solstice, a swing of 5 h 25 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Seaford

The eight nearest incorporated places of 1,000+ in Delaware, measured between internal points. The closest is Blades, 1.6 miles away, with 1,330 people.