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The County Office / Post Office / South Dakota / Brookings County / Sinai / Sinai Post Office

Sinai Post Office in Sinai, SD

  • Sinai Post Office
  • 301 Main Avenue, Sinai, SD 57061
  • 605-826-4306
  • Mon: 7:45 AM - 11:00 AM, 1:00 PM - 4:15 PM
    Tue: 7:45 AM - 11:00 AM, 1:00 PM - 4:15 PM
    Wed: 7:45 AM - 11:00 AM, 1:00 PM - 4:15 PM
    Thu: 7:45 AM - 11:00 AM, 1:00 PM - 4:15 PM
    Fri: 7:45 AM - 11:00 AM, 1:00 PM - 4:15 PM
    Sat: 7:45 AM - 9:45 AM
    Sun: Closed

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