Wainscott US Post Office

357 Montauk Highway
Wainscott, NY 11975
Phone: (631) 537-8943
Fax: (516) 496-4736
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Community Offices / Post Offices

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Bay Shore US Post Office

1314 5th Avenue
Bay Shore - 11706
(631) 969-3504
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Deer Park US Post Office

375 Carlls Path
Deer Park - 11729
(631) 667-6490
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East Islip US Post Office

11 Greenwood Avenue
East Islip - 11730
(631) 581-7807
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Glenwood Landing US Post Office

123 Glenwood Road
Glenwood Landing - 11547
(516) 676-8452
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Hauppauge US Post Office

150 Oser Avenue
Hauppauge - 11788
(631) 231-3155
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Island Park US Post Office

367 Long Beach Road
Island Park - 11558
(516) 432-9537
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Islandia US Post Office

PO Box 7800
Islandia - 11760
(631) 582-7420
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Lynbrook - 11563
(516) 599-7587
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25 Route 111
Smithtown - 11787
(631) 360-6709
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Upton US Post Office

2 Center St
Upton - 11973
(631) 344-2539
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