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Sinai Post Office in Sinai, SD

Find Sinai Post Office in Sinai, SD 57061 to get information on mail-related services, postal services, postal items and payment, parcel shipment, and mail and parcel delivery.

  • Sinai Post Office
  • 301 Main Avenue, Sinai, SD 57061
  • 605-826-4306
  • Mon-Fri 7:30 AM-5:00 PM
    Sat 7:30 AM-12:00 PM

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