Franklin Square US Post Office

867 Hempstead Turnpike
Franklin Square, NY 11010
Phone: (516) 437-6647
Fax: (516) 352-2256
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East Marion US Post Office

9165 Main Road
East Marion - 11939
(631) 477-1668

Yaphank US Post Office

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

Williston Park US Post Office

446 Willis Avenue
Williston Park - 11596
(516) 746-3247

Selden US Post Office

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

Locust US Post Office

115 Forest Avenue
Locust Valley - 11560
(516) 671-1559

Islandia US Post Office

PO Box 7800
Islandia - 11760
(631) 582-7420

Long Beach US Post Office

101 E Park Avenue
Long Beach - 11561
(516) 432-5484

Bellmore US Post Office

2611 Merrick Road
Bellmore - 11710
(516) 781-0579

Port Jefferson US Post Office

407 E Main St # 17
Port Jefferson - 11777
(631) 473-1065

East Setauket US Post Office

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