Smithtown US Post Office

25 Route 111
Smithtown, NY 11787
Phone: (631) 360-6709
Fax: (631) 360-0532
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Levittown US Post Office

180 Gardiners Avenue
Levittown - 11756
(516) 735-7343

Garden City US Post Office

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

Baldwin US Post Office

2260 Grand Avenue
Baldwin - 11510
(516) 223-5024

Oyster Bay US Post Office

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

Hicksville US Post Office

109 Ludy St
Hicksville - 11801
(516) 433-9188

Bayport US Post Office

850 Montauk Highway
Bayport - 11705
(631) 472-7396

Ocean Beach US Post Office

315 Cottage Walk
Ocean Beach - 11770
(631) 583-7368

East Hampton US Post Office

12 Gay Road
East Hampton - 11937
(631) 324-6320

Stony Brook US Post Office

129 Main St
Stony Brook - 11790
(631) 751-5691

Brentwood US Post Office

25 2nd Avenue
Brentwood - 11717
(631) 273-0947