Smithtown US Post Office

25 Route 111
Smithtown, NY 11787
Phone: (631) 360-6709
Fax: (631) 360-0532
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Elmont US Post Office

260 Elmont Road
Elmont - 11003
(516) 354-5947

Upton US Post Office

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

East Quogue US Post Office

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

Riverhead US Post Office

1210 W Main St
Riverhead - 11901
(631) 727-1019

Amityville US Post Office

77 Ireland Place
Amityville - 11701
631-264-3532

Calverton US Post Office

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

East Northport US Post Office

297 Larkfield Road
East Northport - 11731
(631) 368-5632

East Setauket US Post Office

450 Route 25a
East Setauket - 11733
(631) 941-4005

Huntington US Post Office

16 New York Avenue
Huntington - 11743
(631) 423-5880

Port Jefferson Station US Post Office

544 Jefferson Placeaza
Port Jefferson Station - 11776
(631) 473-2751