North Baldwin US Post Office

1620 Grand Avenue
North Baldwin, NY 11510
Phone: (516) 223-5710
Fax: (516) 437-2896
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Copiague US Post Office

695 Marconi Blvd
Copiague - 11726
(631) 842-9084

Sag Harbor US Post Office

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

East Islip US Post Office

11 Greenwood Avenue
East Islip - 11730
(631) 581-7807

Jamesport US Post Office

1451 Route 25
Jamesport - 11947
(631) 722-5946

Uniondale US Post Office

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

Oyster Bay US Post Office

1 Shore Avenue
Oyster Bay - 11771
(516) 922-8249

Amityville US Post Office

77 Ireland Place
Amityville - 11701
631-264-3532

Hempstead US Post Office

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

US Post Office Processing Center

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

Speonk US Post Office

323 Montauk Highway
Speonk - 11972
(631) 325-1741