Sinai Post Office

301 Main Ave, Sinai, South Dakota 57061
Phone: 6058264306
Toll-Free: 1-800-Ask-USPS® (275-8777)
Phone: 6058264306
TTY: 877-889-2457

Sinai Post Office is located in Sinai, Brookings, SD. Check out the opening hours, contacts and services provided by Sinai Post Office. You can also look through reviews on this Post Office and leave your own review.

Retail Hours

Day of the weekOpening hours
Monday10:00 am - 12:00 pm
Tuesday10:00 am - 12:00 pm
Wednesday10:00 am - 12:00 pm
Thursday10:00 am - 12:00 pm
Friday10:00 am - 12:00 pm
Saturday10:00 am - 12:00 pm

Bulk Mail Acceptance Hours

Day of the weekOpening hours
Monday12:00 pm
Tuesday12:00 pm
Wednesday12:00 pm
Thursday12:00 pm
Friday12:00 pm
Saturday12:00 pm

Lobby Hours

Day of the weekOpening hours
Monday24 hours
Tuesday24 hours
Wednesday24 hours
Thursday24 hours
Friday24 hours
Saturday24 hours

Services in Sinai Post Office

  • Business Line
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • Duck Stamps
  • General Delivery
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • Packaged Stamps
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Street Parking

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