Melville US Post Office

718 Walt Whitman Road
Melville, NY 11747
Phone: (631) 421-0726
Fax: (631) 226-5599
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Holtsville US Post Office

162 Long Island Avenue
Holtsville - 11742
(631) 475-1761

Sag Harbor US Post Office

21 Long Island Avenue
Sag Harbor - 11963
(631) 725-8968

Ronkonkoma US Post Office

200 Hawkins Avenue
Ronkonkoma - 11779
(631) 588-0301

Mt. Sinai US Post Office

457 Route 25a
Mt Sinai - 11766
(631) 928-0394

Aquebogue US Post Office

212 Linda Avenue
Aquebogue - 11931
(631) 722-4368

Calverton US Post Office

3690 Middle Country Road
Calverton - 11933
(631) 727-0067

Moriches US Post Office

290 Montauk Highway
Moriches - 11955
(631) 878-1381

Centereach US Post Office

245 Centereach Mall
Centereach - 11720
(631) 588-7069

North Baldwin US Post Office

1620 Grand Avenue
North Baldwin - 11510
(516) 223-5710

Island Park US Post Office

367 Long Beach Road
Island Park - 11558
(516) 432-9537