Westbury US Post Office

360 Maple Avenue
Westbury, NY 11590
Phone: (516) 333-3598
Fax: (516) 496-4736
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Amityville US Post Office

77 Ireland Place
Amityville - 11701
631-264-3532

Bellport US Post Office

26 Station Road
Bellport - 11713
(631) 286-8561

Calverton US Post Office

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

East Quogue US Post Office

6 Bay Avenue
East Quogue - 11942
(631) 653-5247

Elmont US Post Office

778 Elmont Road
Elmont - 11003
(516) 285-4078

Islip US Post Office

309 Main St # 3
Islip - 11751
(631) 581-7931

Old Westbury US Post Office

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

Oyster Bay US Post Office

1 Shore Avenue
Oyster Bay - 11771
(516) 922-8249

Valley Stream US Post Office

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

Water Mill US Post Office

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