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Holtsville Post Office in Holtsville, NY

Find Holtsville Post Office in Holtsville, NY 11742 to get information on mail-related services, postal services, postal items and payment, parcel shipment, and mail and parcel delivery.

  • Holtsville Post Office
  • 162 Long Island Avenue, Holtsville, NY 11742
  • 631-475-1761
  • Mon-Fri 7:30 AM-5:00 PM
    Sat 7:30 AM-12:00 PM

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