Middle Island US Post Office

780 Middle Country Road
Middle Island, NY 11953
Phone: (631) 205-1089
Fax: (631) 226-5599
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Shelter Island US Post Office

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

Sayville US Post Office

130 Greene Avenue
Sayville - 11782
(631) 589-6963

East Marion US Post Office

9165 Main Road
East Marion - 11939
(631) 477-1668

Hicksville US Post Office

185 W John St
Hicksville - 11801
(516) 933-2300

Central Islip US Post Office

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

Brookhaven US Post Office

2512 Montauk Highway
Brookhaven - 11719
(631) 286-1591

North Baldwin US Post Office

1620 Grand Avenue
North Baldwin - 11510
(516) 223-5710

Shoreham US Post Office

69 Route 25a
Shoreham - 11786
(631) 744-3185

Eastport US Post Office

24 Eastport Manor Road
Eastport - 11941
(631) 325-1798

Wainscott US Post Office

357 Montauk Highway
Wainscott - 11975
(631) 537-8943