Here's the NEWSDAY Community Profile:
Buying in Flanders -- Newsday.com (broken link)
Flanders is a hamlet (an unincorporated area) in the northwest part of the Town of Southampton in the southeast part of Suffolk County, along the Southampton/Riverhead town line.
Beginning on the north and moving in a clockwise direction, the Hamlet of Flanders in the Town of Southampton is bordered on the north by the Hamlet of Riverhead in the Town of Riverhead, the Peconic River (the Southampton/Riverhead town line) and the Great Peconic Bay; on the east by the Hamlet of Hampton Bays; on the south by the Hamlet of East Quogue; and, on the west by the Hamlet of Northampton and the Hamlet of Riverside.
Flanders is one of those many villages and hamlets on Long Island where none of the places in the community have the hamlet name in their mailing address: places in the Hamlet of Flanders have a "Riverhead, NY 11901" mailing address.
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):
//www.city-data.com/forum/long-...-resource.html