Syosset Post Office Hours

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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

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Ernest Hupfer (Postmaster)
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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