Farmingdale US Post Office

380 Main St
Farmingdale, NY 11735
Phone: (516) 249-1552
Fax: (516) 249-5231
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Islip US Post Office

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

Calverton US Post Office

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

Commack US Post Office

150 Veterans Memorial Highway
Commack - 11725
(631) 543-3647

Bayville US Post Office

251 Bayville Avenue
Bayville - 11709
(516) 628-9235

Mt. Sinai US Post Office

457 Route 25a
Mt Sinai - 11766
(631) 928-0394

Elmont US Post Office

260 Elmont Road
Elmont - 11003
(516) 354-5947

Bethpage US Post Office

288 Grumman Road W
Bethpage - 11714
(516) 349-5000

Holbrook US Post Office

445 Furrows Road
Holbrook - 11741
(631) 588-0226

Bay Shore US Post Office

1314 5th Avenue
Bay Shore - 11706
(631) 969-3504

Shelter Island US Post Office

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