Central Islip US Post Office

110 E Suffolk Avenue
Central Islip, NY 11722
Phone: (631) 234-0547
Fax: (631) 234-7429
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Sag Harbor US Post Office

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

Garden City US Post Office

600 Franklin Avenue
Garden City - 11530
(516) 747-2201

Huntington Station US Post Office

888 E Jericho Turnpike
Huntington Sta - 11746
(631) 427-0594

Mastic Beach US Post Office

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

Uniondale US Post Office

1000 Front St
Uniondale - 11553
(516) 481-8245

Roosevelt US Post Office

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

Ridge US Post Office

1700 Middle Country Road
Ridge - 11961
(631) 345-6842

Shelter Island Heights US Post Office

6 Grand Avenue
Shelter Island Heights - 11965
(631) 749-0486

Holtsville US Post Office

162 Long Island Avenue
Holtsville - 11742
(631) 475-1761

Mt. Sinai US Post Office

457 Route 25a
Mt Sinai - 11766
(631) 928-0394