Another example of NEWSDAY mistaking the community name in the place's mailing address for the community in which that place is located:
Bus driver gets lost, parents get mad -- Newsday.com (broken link)
Carolann's house is not in Wantagh, it's in North Wantagh (Wantagh P.O.).
In other words, if you want to send a letter to Carolann at her house, you would address this letter to "Wantagh, NY"; however, if you want to actually go to Carolann's house, you would go to North Wantagh.
North Wantagh is a hamlet (unincorporated area) in the east 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 North Wantagh in the Town of Hempstead is bordered on the north by the Hamlet of Levittown; on the east by the Hamlet of North Massapequa in the Town of Oyster Bay (the Hempstead/Oyster Bay town line); on the south by the Hamlet of Seaford and the Hamlet of Wantagh; and, on the west by the Hamlet of North Bellmore.
North Wantagh 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 North Wantagh have either a "Wantagh, NY 11793" or a "Seaford, NY 11783" 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):
Excellent Long Island Geographic Resource