Greenport US Post Office

131 Front St
Greenport, NY 11944
Phone: (631) 477-1493
Fax: (516) 487-2508
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Kings Point US Post Office

300 Steamboat Road
Kings Point - 11024
(516) 773-5298

Greenvale US Post Office

37 Northern Blvd
Greenvale - 11548
(516) 621-7163

North Babylon US Post Office

1196 Deer Park Avenue
North Babylon - 11703
(631) 667-4693

Riverhead US Post Office

1210 W Main St
Riverhead - 11901
(631) 727-1019

Sagaponack US Post Office

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

Stony Brook US Post Office

129 Main St
Stony Brook - 11790
(631) 751-5691

Massapequa US Post Office

80 Atlantic Avenue
Oceanside - 11572
(516) 766-5829

East Marion US Post Office

9165 Main Road
East Marion - 11939
(631) 477-1668

Seaford US Post Office

3575 Merrick Road
Seaford - 11783
(516) 785-3851

Shelter Island Heights US Post Office

6 Grand Avenue
Shelter Island Heights - 11965
(631) 749-0486