Baldwin US Post Office

2260 Grand Avenue
Baldwin, NY 11510
Phone: (516) 223-5024
Fax: (516) 223-7420
Visit Website

Sag Harbor US Post Office

21 Long Island Avenue
Sag Harbor - 11963
(631) 725-8968

Old Westbury US Post Office

223 Store Hill Road # A
Old Westbury - 11568
(516) 333-0964

Hampton US Post Office

16 Ponquogue Avenue
Hampton Bays - 11946
(631) 728-6994

Bayport US Post Office

850 Montauk Highway
Bayport - 11705
(631) 472-7396

Water Mill US Post Office

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

Saltaire US Post Office

Broadway St
Saltaire - 11706
(631) 583-7716

St. James US Post Office

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

Yaphank US Post Office

5 E Main St
Yaphank - 11980
(631) 345-6829

Westhampton US Post Office

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

Hempstead US Post Office

200 Fulton Avenue
Hempstead - 11550
(516) 560-1120