Sag Harbor US Post Office

21 Long Island Avenue
Sag Harbor, NY 11963
Phone: (631) 725-8968
Fax: (516) 766-5845
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Ridge US Post Office

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

Stony Brook US Post Office

129 Main St
Stony Brook - 11790
(631) 751-5691

Mill Neck US Post Office

32 Frost Mill Road
Mill Neck - 11765
(516) 922-8247

Centereach US Post Office

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

Rocky Point US Post Office

346 Route 25a # 84
Rocky Point - 11778
(631) 744-0635

East Setauket US Post Office

101 Main St
Setauket - 11733
(631) 941-4042

Mineola US Post Office

160 1st St
Mineola - 11501
(516) 746-1372

Huntington US Post Office

16 New York Avenue
Huntington - 11743
(631) 423-5880

Montauk US Post Office

73 S Euclid Avenue
Montauk - 11954
(631) 668-7043

Islip US Post Office

309 Main St # 3
Islip - 11751
(631) 581-7931