Islandia US Post Office

PO Box 7800
Islandia, NY 11760
Phone: (631) 582-7420
Fax: (516) 487-2508
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Great River US Post Office

62 River Road
Great River - 11739
(631) 581-7680

Southold US Post Office

710 Traveler St
Southold - 11971
(631) 765-4027

Commack US Post Office

150 Veterans Memorial Highway
Commack - 11725
(631) 543-3647

Roosevelt US Post Office

1 Babylon Turnpike
Roosevelt - 11575
(516) 378-6973

North Baldwin US Post Office

1620 Grand Avenue
North Baldwin - 11510
(516) 223-5710

Long Beach US Post Office

101 E Park Avenue
Long Beach - 11561
(516) 432-5484

Hampton US Post Office

16 Ponquogue Avenue
Hampton Bays - 11946
(631) 728-6994

Cold Spring Harbor US Post Office

126 Main St
Cold Spring Hbr - 11724
(631) 692-5307

Bay Shore US Post Office

1314 5th Avenue
Bay Shore - 11706
(631) 969-3504

Merrick US Post Office

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