Greenport US Post Office

131 Front St
Greenport, NY 11944
Phone: (631) 477-1493
Fax: (516) 487-2508
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Centereach US Post Office

245 Centereach Mall
Centereach - 11720
(631) 588-7069

Commack US Post Office

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

Shelter Island US Post Office

45 N Ferry Road
Shelter Island - 11964
(631) 749-1857

Freeport US Post Office

132 W Merrick Road
Freeport - 11520
(516) 378-6512

Locust US Post Office

115 Forest Avenue
Locust Valley - 11560
(516) 671-1559

Levittown US Post Office

180 Gardiners Avenue
Levittown - 11756
(516) 735-7343

Central Islip US Post Office

110 E Suffolk Avenue
Central Islip - 11722
(631) 234-0547

New Hyde Park US Post Office

1568 Union Turnpike
New Hyde Park - 11040
(516) 616-6893

Calverton US Post Office

3690 Middle Country Road
Calverton - 11933
(631) 727-0067

Holtsville US Post Office

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