Defiance Post Office

Offices closed May 27th in observance of Memorial Day

2959 S Highway 94, Defiance, MO 63341

Contact Numbers

Phone: 636-987-2407
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

Monday 7:30am - 4:00pm
Tuesday 7:30am - 4:00pm
Wednesday 7:30am - 4:00pm
Thursday 7:30am - 4:00pm
Friday 7:30am - 4:00pm
Saturday 8:15am - 10:45am
Sunday Closed

Last Collection Times

Monday 4:00pm
Tuesday 4:00pm
Wednesday 4:00pm
Thursday 4:00pm
Friday 4:00pm
Saturday 10:45am
Sunday Closed

Bulk Mail Acceptance Hours

Monday 9:00am - 11:00am, 1:00pm - 3:30pm
Tuesday 9:00am - 11:00am, 1:00pm - 3:30pm
Wednesday 9:00am - 11:00am, 1:00pm - 3:30pm
Thursday 9:00am - 11:00am, 1:00pm - 3:30pm
Friday 9:00am - 11:00am, 1:00pm - 3:30pm
Saturday 9:00am - 10:30am
Sunday Closed

*This facility does not process US Passports applications or renewals. Check nearby locations below.

  • 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

Visit our Links Page for Holiday Schedule, Change of Address, Hold Mail/Stop Delivery, PO Box rentals and fees, and Available Jobs.

*Please call to verify information. Is anything incorrect? Let us know here

Nearby Post Offices:

Saint Albans
3451 Saint Albans Rd Ste E
2.0 miles away

18072 Manchester Rd
4.4 miles away

237 Ferry St
4.8 miles away

106 3rd St
5.1 miles away


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Worst post office ever. 4 days of no mail because there's hills in the country and it snowed 4 days ago.


Mail service is a joke , several times in the last few months my packages have been delivered to the wrong address not once but twice for the same package! I recently received a check in the mail addressed. to someone with a different name ,address and city. Today i checked the tracking on a package that has been out for delivery for four days and has been to the Dist . center twice . the tracking today says it was delivered to my mailbox. It might be in some mailbox but its sure not in mine.


Horrible customer service mail person's mix up mail on a regular I sent an envelope with a large card. Mail was obviously opened looking for a gift card. Sent to recipient 3 weeks later taped up envelope and the stamps had not been used. Obvious to me it was opened in the Defiance PO careless and unlawful goings on


did we have mail delivered today saturday 6/29

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