Baldwin US Post Office

2260 Grand Avenue
Baldwin, NY 11510
Phone: (516) 223-5024
Fax: (516) 223-7420
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Uniondale US Post Office

1000 Front St
Uniondale - 11553
(516) 481-8245

Cutchogue US Post Office

240 Griffing St
Cutchogue - 11935
(631) 734-6032

Port Jefferson Station US Post Office

544 Jefferson Placeaza
Port Jefferson Station - 11776
(631) 473-2751

St. James US Post Office

325 Lake Avenue
St James - 11780
(631) 584-4138

US Post Office Processing Center

160 Duryea Road
Melville - 11747
(631) 755-2575

Wheatley Heights US Post Office

6 Colonial Springs Road
Wheatley Heights - 11798
(631) 643-3913

Hicksville US Post Office

185 W John St
Hicksville - 11801
(516) 933-2300

New Suffolk US Post Office

375 1st St
New Suffolk - 11956
(631) 734-6271

Mill Neck US Post Office

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

Sagaponack US Post Office

542 Sagg Main St
Sagaponack - 11962
(631) 537-9346