Chrisk327, bear in mind that the majority of places that have a "Seaford, NY 11783" mailing addresss (3,942 acres) are not in the Hamlet of Seaford (1,758 acres).
For those who may not be familiar with Seaford:
Seaford is a hamlet (an unincorporated area) in the extreme southeast section of the Town of Hempstead, in the southeast part of Nassau County, along the Hempstead/Oyster Bay town line.
Beginning on the north and moving in a clockwise direction, the Hamlet of Seaford in the Town of Hempstead is bordered on the north by the Hamlet of North Wantagh; on the east by the Hamlet of Massapequa, Town of Oyster Bay (the Hempstead/Oyster Bay town line); on the south by Zachs Bay; and, on the west by the Hamlet of Wantagh.
Seaford is one of those villages and hamlets on Long Island where the majority of the places with the community name as part of their mailing address are not in the hamlet: places that have a "Seaford, NY 11783" mailing address that are not in the Hamlet of Seaford are in the Hamlet of North Wantagh and the Hamlet of Levittown in the Town of Hempstead and in the Hamlet of North Massapequa and the Hamlet of Plainedge in the Town of Oyster Bay.
For a good set of town-by-town maps showing all the villages and hamlets in each of LI's 13 towns (3 in Nassau County and 10 in Suffolk County):
http://www.city-data.com/forum/long-...-resource.html