Defiance Post Office

2959 S Highway 94, Defiance, Missouri 63341
Phone: 6369872407
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

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

Retail Hours

Day of the weekOpening hours
Monday9:00 am - 11:00 am, 1:00 pm - 4:00 pm
Tuesday9:00 am - 11:00 am, 1:00 pm - 4:00 pm
Wednesday9:00 am - 11:00 am, 1:00 pm - 4:00 pm
Thursday9:00 am - 11:00 am, 1:00 pm - 4:00 pm
Friday9:00 am - 11:00 am, 1:00 pm - 4:00 pm
Saturday9:00 am - 10:45 am
SundayClosed

Bulk Mail Acceptance Hours

Day of the weekOpening hours
Monday9:00 am - 11:00 am, 1:00 pm - 3:30 pm
Tuesday9:00 am - 11:00 am, 1:00 pm - 3:30 pm
Wednesday9:00 am - 11:00 am, 1:00 pm - 3:30 pm
Thursday9:00 am - 11:00 am, 1:00 pm - 3:30 pm
Friday9:00 am - 11:00 am, 1:00 pm - 3:30 pm
Saturday9:00 am - 10:30 am
SundayClosed

Lobby Hours

Day of the weekOpening hours
Monday4:00 pm
Tuesday4:00 pm
Wednesday4:00 pm
Thursday4:00 pm
Friday4:00 pm
Saturday10:45 am
SundayClosed

Services in Defiance Post Office

  • Bulk Mail Acceptance
  • Bulk Mail Account Balance
  • Bulk Mail New Permit
  • Burial Flags
  • Business Line
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • General Delivery
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • Packaged Stamps
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Lot Parking

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