Great River US Post Office

62 River Road
Great River, NY 11739
Phone: (631) 581-7680
Fax: (516) 487-2508
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Islip Terrace US Post Office

136 Carleton Avenue
Islip Terrace - 11752
(631) 581-7894

Roslyn US Post Office

1391 Old Northern Blvd
Roslyn - 11576
(516) 621-7397

Deer Park US Post Office

375 Carlls Path
Deer Park - 11729
(631) 667-6490

Amityville US Post Office

77 Ireland Place
Amityville - 11701
631-264-3532

North Baldwin US Post Office

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

Upton US Post Office

2 Center St
Upton - 11973
(631) 344-2539

New Hyde Park US Post Office

1568 Union Turnpike
New Hyde Park - 11040
(516) 616-6893

Fishers Island US Post Office

1 Oriental Avenue
Fishers Island - 06390
(631) 788-7835

Island Park US Post Office

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

Lake Grove US Post Office

1001 Hawkins Avenue
Lake Grove - 11755
(631) 588-7019