Sayville US Post Office

130 Greene Avenue
Sayville, NY 11782
Phone: (631) 589-6963
Fax: (516) 766-5845
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East Moriches US Post Office

3 Atlantic Avenue
East Moriches - 11940
(631) 878-0243

Massapequa US Post Office

80 Atlantic Avenue
Oceanside - 11572
(516) 766-5829

Seaford US Post Office

3575 Merrick Road
Seaford - 11783
(516) 785-3851

Elmont US Post Office

778 Elmont Road
Elmont - 11003
(516) 285-4078

Port Jefferson Station US Post Office

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

Great Neck US Post Office

661 Middle Neck Road
Great Neck - 11023
(516) 829-6315

Farmingdale US Post Office

380 Main St
Farmingdale - 11735
(516) 249-1552

Farmingville US Post Office

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

Williston Park US Post Office

446 Willis Avenue
Williston Park - 11596
(516) 746-3247

East Hampton US Post Office

291 Springs Fireplace Road
East Hampton - 11937
(631) 324-0790