Barnhart Post Office

1635 Marriott Ln, Barnhart, MO 63012

Contact Numbers

Phone: 636-464-3606
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours







Lobby Hours
PO Box Access Available

Monday 24 hours
Tuesday 24 hours
Wednesday 24 hours
Thursday 24 hours
Friday 24 hours
Saturday 24 hours
Sunday 24 hours

Last Collection Times

Monday 4:15pm
Tuesday 4:15pm
Wednesday 4:15pm
Thursday 4:15pm
Friday 4:15pm
Saturday 11:15am
Sunday Closed

Bulk Mail Acceptance Hours

Monday 9:00am - 1:00pm, 2:00pm - 2:30pm
Tuesday 9:00am - 1:00pm, 2:00pm - 2:30pm
Wednesday 9:00am - 1:00pm, 2:00pm - 2:30pm
Thursday 9:00am - 1:00pm, 2:00pm - 2:30pm
Friday 9:00am - 1:00pm, 2:00pm - 2:30pm
Saturday Closed
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
  • Duck Stamps
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • 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:

Liguori
1 Liguori Dr
0.4 mile away

Imperial
6035 W Outer Rd
1.0 mile away

Kimmswick
6057 Front St
1.6 miles away

Pevely
305 Main St
2.5 miles away

Reviews

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Shame on our carrier. My grandchildren were in town so we let them pick out 3 bags of food for the post food drive Saturday. We even put it on a chair next to the mail box, in the postal bag with the others clearly marked. We sat on the porch, watched him pull up, look at it, put mail it the box and drive away. We yelled after him and watched him drive away. We will drive the food to Arnold food pantry where I am sure they won't be put out by picking up a few bags. Extremely disappointed.
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