Sag Harbor US Post Office

21 Long Island Avenue
Sag Harbor, NY 11963
Phone: (631) 725-8968
Fax: (516) 766-5845
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Westhampton US Post Office

408 Mill Road
Westhampton - 11977
(631) 288-4081

Moriches US Post Office

290 Montauk Highway
Moriches - 11955
(631) 878-1381

West Hempstead US Post Office

245 Hempstead Avenue
West Hempstead - 11552
(516) 481-5430

Great Neck US Post Office

661 Middle Neck Road
Great Neck - 11023
(516) 829-6315

Carle Place US Post Office

309 Westbury Avenue
Carle Placeace - 11514
(516) 333-3147

Mt. Sinai US Post Office

457 Route 25a
Mt Sinai - 11766
(631) 928-0394

Glenwood Landing US Post Office

123 Glenwood Road
Glenwood Landing - 11547
(516) 676-8452

East Islip US Post Office

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

Floral Park US Post Office

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

Eastport US Post Office

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