Islip US Post Office

309 Main St # 3
Islip, NY 11751
Phone: (631) 581-7931
Fax: (516) 487-2508
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West Hempstead US Post Office

245 Hempstead Avenue
West Hempstead - 11552
(516) 481-5430

Jamesport US Post Office

70 2nd St
South Jamesport - 11970
(631) 722-4317

Great River US Post Office

62 River Road
Great River - 11739
(631) 581-7680

Glenwood Landing US Post Office

123 Glenwood Road
Glenwood Landing - 11547
(516) 676-8452

Melville US Post Office

718 Walt Whitman Road
Melville - 11747
(631) 421-0726

Medford US Post Office

1905 Route 112
Medford - 11763
(631) 475-8273

Ridge US Post Office

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

Lake Grove US Post Office

1001 Hawkins Avenue
Lake Grove - 11755
(631) 588-7019

Williston Park US Post Office

446 Willis Avenue
Williston Park - 11596
(516) 746-3247

St. James US Post Office

325 Lake Avenue
St James - 11780
(631) 584-4138