Islandia US Post Office

PO Box 7800
Islandia, NY 11760
Phone: (631) 582-7420
Fax: (516) 487-2508
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Upton US Post Office

2 Center St
Upton - 11973
(631) 344-2539

Garden City US Post Office

630 Old Country Road # 530
Garden City - 11530
(516) 746-1394

West Hempstead US Post Office

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

West Babylon US Post Office

385 Route 109
West Babylon - 11704
(631) 893-0560

Point Lookout US Post Office

110 Lido Blvd
Point Lookout - 11569
(516) 431-7590

Peconic US Post Office

2575 Peconic Ln
Peconic - 11958
(631) 765-9348

East Islip US Post Office

11 Greenwood Avenue
East Islip - 11730
(631) 581-7807

Oyster Bay US Post Office

1 Shore Avenue
Oyster Bay - 11771
(516) 922-8249

Sayville US Post Office

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

Seaford US Post Office

3575 Merrick Road
Seaford - 11783
(516) 785-3851