Central Islip US Post Office

101 Federal Plaza
Central Islip, NY 11722
Phone: (631) 715-0001
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Great River US Post Office

62 River Road
Great River - 11739
(631) 581-7680

Mill Neck US Post Office

32 Frost Mill Road
Mill Neck - 11765
(516) 922-8247

Melville US Post Office

718 Walt Whitman Road
Melville - 11747
(631) 421-0726

Eastport US Post Office

24 Eastport Manor Road
Eastport - 11941
(631) 325-1798

Hempstead US Post Office

200 Fulton Avenue
Hempstead - 11550
(516) 560-1120

East Setauket US Post Office

101 Main St
Setauket - 11733
(631) 941-4042

Bethpage US Post Office

288 Grumman Road W
Bethpage - 11714
(516) 349-5000

Levittown US Post Office

180 Gardiners Avenue
Levittown - 11756
(516) 735-7343

Hicksville US Post Office

109 Ludy St
Hicksville - 11801
(516) 433-9188

Shelter Island US Post Office

45 N Ferry Road
Shelter Island - 11964
(631) 749-1857