Water Mill US Post Office

670 Montauk Highway
Water Mill, NY 11976
Phone: (631) 726-6310
Fax: (516) 496-4736
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Valley Stream US Post Office

111 S Franklin Avenue
Valley Stream - 11580
(516) 825-8739

Glen Head US Post Office

240 Glen Head Road # 1
Glen Head - 11545
(516) 676-8465

Calverton US Post Office

3690 Middle Country Road
Calverton - 11933
(631) 727-0067

Jamesport US Post Office

70 2nd St
South Jamesport - 11970
(631) 722-4317

Moriches US Post Office

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

Selden US Post Office

109 College Placez
Selden - 11784
(631) 732-8627

Mattituck US Post Office

140 Love Ln
Mattituck - 11952
(631) 298-1364

Northport US Post Office

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

Lake Grove US Post Office

1001 Hawkins Avenue
Lake Grove - 11755
(631) 588-7019

Melville US Post Office

718 Walt Whitman Road
Melville - 11747
(631) 421-0726