Mt. Sinai US Post Office

457 Route 25a
Mt Sinai, NY 11766
Phone: (631) 928-0394
Fax: (516) 747-5876
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Shelter Island Heights US Post Office

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

Orient US Post Office

980 Village Ln
Orient - 11957
(631) 323-9760

Laurel US Post Office

2168 Main Road
Laurel - 11948
(631) 298-1672

Northport US Post Office

240 Main St
Northport - 11768
(631) 261-6941

Port Jefferson Station US Post Office

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

Lindenhurst US Post Office

65 E Hoffman Avenue
Lindenhurst - 11757
(631) 226-6914

Medford US Post Office

1905 Route 112
Medford - 11763
(631) 475-8273

St. James US Post Office

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

Floral Park US Post Office

35 Tulip Avenue
Floral Park - 11001
(516) 616-5184

Wheatley Heights US Post Office

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