Shelter Island US Post Office

45 N Ferry Road
Shelter Island, NY 11964
Phone: (631) 749-1857
Fax: (516) 766-5845
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Remsenburg US Post Office

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

Bay Shore US Post Office

10 Bay Shore Avenue
Bay Shore - 11706
(631) 969-3506

Central Islip US Post Office

101 Federal Plaza
Central Islip - 11722
(631) 715-0001

Southold US Post Office

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

Mastic Beach US Post Office

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

Long Beach US Post Office

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

West Islip US Post Office

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

Cedarhurst US Post Office

124 Grove Avenue
Cedarhurst - 11516
(516) 295-1452

Aquebogue US Post Office

212 Linda Avenue
Aquebogue - 11931
(631) 722-4368

Cherry Grove US Post Office

1000 Bay Walk
Cherry Grove - 11782
(631) 589-1177