SYOSSET POST OFFICE 11791

Syosset Post Office Hours


Retail Hours

Monday-Friday 9:00am - 5:00pm
Saturday 9:00am - 1:00pm
Sunday Closed

Bulk Mail Acceptance Hours

Monday-Friday 10:00am - 1:00pm, 2:00pm - 4:00pm
Saturday-Sunday Closed

Monday-Friday 9:00am - 9:30am
Saturday-Sunday Closed

Lobby Hours

Monday-Sunday 12:01am - 11:59pm

Monday-Sunday 12:01am - 11:59pm

PO Box Delivery Time

Monday-Saturday 11:00am
Sunday Closed

USPS Shipping Rate Calculator

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Ernest Hupfer (Postmaster) ernest.m.hupfer@usps.gov
40 Queens St
Syosset, NY 11791

The Syosset Post Office is located in the state of New York within Nassau County. This location serves 25,076 Syosset residents with a median income of $137,796. It's estimated that approximately 40,024 packages pass through this post office each year.

Syosset Post Office Location


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