Yaphank US Post Office

5 E Main St
Yaphank, NY 11980
Phone: (631) 345-6829
Fax: (516) 295-5706
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Plainview US Post Office

1662 Old Country Road
Plainview - 11803
(516) 845-7162

Westhampton Beach US Post Office

170 Main St
Westhampton Beach - 11978
(631) 288-4093

Port Jefferson US Post Office

407 E Main St # 17
Port Jefferson - 11777
(631) 473-1065

Locust US Post Office

115 Forest Avenue
Locust Valley - 11560
(516) 671-1559

Port Jefferson Station US Post Office

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

Massapequa Park US Post Office

4910 Merrick Road
Massapequa Park - 11762
(516) 798-1268

Water Mill US Post Office

670 Montauk Highway
Water Mill - 11976
(631) 726-6310

St. James US Post Office

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

Eastport US Post Office

24 Eastport Manor Road
Eastport - 11941
(631) 325-1798

Syosset US Post Office

40 Queens St
Syosset - 11791
(516) 921-0746