Syosset Post Office

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40 Queens St, Syosset, NY 11791
(516) 921-0746
  • Hours: Bulk Mail Acceptance Hours:
    Mon.-Fri., 10:00am - 1:00pm; 2:00pm - 4:00pm Sat-Sun Closed Retail Hours: Mon-Fri 9:00am - 5:00pm Sat 9:00am - 1:00pm; Sun. Closed Last Collection Hours Mon-Fri 6:15pm Sat 3:45pm Sun Closed Lobby Hours Mon-Sun
  • Fax: 516-496-4736
  • Website: https://www.usps.com/
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