Roslyn US Post Office

1391 Old Northern Blvd
Roslyn, NY 11576
Phone: (516) 621-7397
Fax: (516) 766-5845
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Seaford US Post Office

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

Lawrence US Post Office

12 Bayview Avenue
Lawrence - 11559
(516) 239-2834

New Suffolk US Post Office

375 1st St
New Suffolk - 11956
(631) 734-6271

Holbrook US Post Office

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

Sound Beach US Post Office

25 New York Avenue
Sound Beach - 11789
(631) 744-0837

Roslyn Heights US Post Office

66 Mineola Avenue
Roslyn Heights - 11577
(516) 621-8050

Mattituck US Post Office

140 Love Ln
Mattituck - 11952
(631) 298-1364

Ronkonkoma US Post Office

200 Hawkins Avenue
Ronkonkoma - 11779
(631) 588-0301

Williston Park US Post Office

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

Mt. Sinai US Post Office

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