Great Neck US Post Office

1 Welwyn Road
Great Neck, NY 11021
Phone: (516) 482-5013
Fax: (516) 487-2508
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East Quogue US Post Office

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

Eastport US Post Office

24 Eastport Manor Road
Eastport - 11941
(631) 325-1798

Farmingville US Post Office

500 Horseblock Road
Farmingville - 11738
(631) 732-8625

Quogue US Post Office

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

Ronkonkoma US Post Office

200 Hawkins Avenue
Ronkonkoma - 11779
(631) 588-0301

Sag Harbor US Post Office

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

Shoreham US Post Office

69 Route 25a
Shoreham - 11786
(631) 744-3185

Smithtown US Post Office

25 Route 111
Smithtown - 11787
(631) 360-6709

St. James US Post Office

325 Lake Avenue
St James - 11780
(631) 584-4138

Wading River US Post Office

1816 Wading River Manor Road
Wading River - 11792
(631) 929-0219