Seaford is a city located along the Nanticoke River in Sussex County, Delaware, United States. According to the 2010 Census Bureau figures, the population of the city is 6,928, an increase of 3.4% from the 2000 census. It is part of the Salisbury, Maryland-Delaware Metropolitan Statistical Area.
It is the largest city fully within Sussex County and was voted the 28th Best Small Town in America. It hosted the Seaford Eagles of the Eastern Shore Baseball League.
Seaford is named after Seaford, East Sussex in England.
All land in current western and southern Sussex County was first settled as part of Maryland. Seaford, along with Bridgeville, Greenwood, Middleford, and others, were all part of Dorchester County in the Province of Maryland. Blades, Laurel, and Concord areas, on the other hand, were part of Somerset County. It is reported that an error in a map coordinate resulted in the east-west line of Delaware being from current Delmar to Fenwick. The original agreement had the eastwest line at the Cape Henlopen, not at the false cape.