The area generally considered to be Claymont encompasses the entire 19703 ZIP code, which is bounded by the Pennsylvania border to the north, the Delaware River to the east, the Baltimore and Ohio Railroad line to the west, and the Perkins Run stream to the south.

New Castle is a city in New Castle County, Delaware, six miles south of Wilmington, situated on the Delaware River. New Castle is served by the Colonial School District.

Newark, in New Castle County, Delaware, is 12 miles west-southwest of Wilmington and roughly halfway between Philadelphia (approximately 45 miles away) and Baltimore. Public education in Newark is managed by the Christina School District. Newark is the home of the University of Delaware.