Sagaponack US Post Office

542 Sagg Main St
Sagaponack, NY 11962
Phone: (631) 537-9346
Fax: (516) 766-5845
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Calverton US Post Office

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

Jamesport US Post Office

1451 Route 25
Jamesport - 11947
(631) 722-5946

Long Beach US Post Office

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

Malverne US Post Office

339 Hempstead Avenue
Malverne - 11565
(516) 599-7583

Mastic US Post Office

1450 Montauk Highway
Mastic - 11950
(631) 281-0275

Middle Island US Post Office

780 Middle Country Road
Middle Island - 11953
(631) 205-1089

Massapequa US Post Office

80 Atlantic Avenue
Oceanside - 11572
(516) 766-5829

Old Bethpage US Post Office

696 Old Bethpage Road
Old Bethpage - 11804
(516) 249-2915

Riverhead US Post Office

1210 W Main St
Riverhead - 11901
(631) 727-1019

Sag Harbor US Post Office

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