Upton US Post Office

2 Center St
Upton, NY 11973
Phone: (631) 344-2539
Fax: (516) 496-4736
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Great Neck US Post Office

1 Welwyn Road
Great Neck - 11021
(516) 482-5013

Bayport US Post Office

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

Bellmore US Post Office

2611 Merrick Road
Bellmore - 11710
(516) 781-0579

North Babylon US Post Office

1196 Deer Park Avenue
North Babylon - 11703
(631) 667-4693

East Setauket US Post Office

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

West Islip US Post Office

480 Union Blvd
West Islip - 11795
(631) 669-5157

Merrick US Post Office

2040 Merrick Road
Merrick - 11566
(516) 378-7087

Roslyn US Post Office

1391 Old Northern Blvd
Roslyn - 11576
(516) 621-7397

Floral Park US Post Office

35 Tulip Avenue
Floral Park - 11001
(516) 616-5184

Oyster Bay US Post Office

1 Shore Avenue
Oyster Bay - 11771
(516) 922-8249