East Setauket US Post Office

101 Main St
Setauket, NY 11733
Phone: (631) 941-4042
Fax: (516) 766-5845
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Plainview US Post Office

1662 Old Country Road
Plainview - 11803
(516) 845-7162

Northport US Post Office

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

Wyandanch US Post Office

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

Mastic Beach US Post Office

110 Mastic Road
Mastic Beach - 11951
(631) 281-0359

Deer Park US Post Office

375 Carlls Path
Deer Park - 11729
(631) 667-6490

Yaphank US Post Office

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

Old Westbury US Post Office

223 Store Hill Road # A
Old Westbury - 11568
(516) 333-0964

Remsenburg US Post Office

137 S Country Road
Remsenburg - 11960
(631) 325-5937

Bethpage US Post Office

339 Hicksville Road
Bethpage - 11714
(516) 938-3901

Bayport US Post Office

850 Montauk Highway
Bayport - 11705
(631) 472-7396