Among other things, the Census Bureau's
online address search function also indicates in which school district an address is located, and you can get a map.
However, pending any future revisions, both the community (city, village and CDP) and school district maps generated at the 2010 Census site are harder to access and have less information than the maps generated at the no longer available 2000 Census site.
CDP, or
Census
Designated
Place, is the Census Bureau equivalent for a hamlet in Nassau and Suffolk Counties.