Rockville US Post Office

250 Merrick Road
Rockville Centre, NY 11570
Phone: (516) 766-5749
Fax: (516) 766-5845
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Elmont US Post Office

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

Floral Park US Post Office

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

Quogue US Post Office

6 Midland St
Quogue - 11959
(631) 653-6427

Northport US Post Office

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

Hicksville US Post Office

185 W John St
Hicksville - 11801
(516) 933-2300

Wyandanch US Post Office

1569 Straight Path
Wyandanch - 11798
(631) 643-3914

East Hampton US Post Office

291 Springs Fireplace Road
East Hampton - 11937
(631) 324-0790

Valley Stream US Post Office

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

East Setauket US Post Office

101 Main St
Setauket - 11733
(631) 941-4042

Sag Harbor US Post Office

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