Smithtown US Post Office

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

339 Hempstead Avenue
Malverne - 11565
(516) 599-7583

Sag Harbor US Post Office

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

Lake Grove US Post Office

1001 Hawkins Avenue
Lake Grove - 11755
(631) 588-7019

West Babylon US Post Office

385 Route 109
West Babylon - 11704
(631) 893-0560

Bethpage US Post Office

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

Old Westbury US Post Office

1 Store Hill Road # A
Old Westbury - 11568
(516) 626-5247

East Setauket US Post Office

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

St. James US Post Office

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

Yaphank US Post Office

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

North Bellmore US Post Office

2465 Jerusalem Avenue
North Bellmore - 11710
(516) 785-0676