Marthasville Post Office

105 Depot St, Marthasville, MO 63357

Contact Numbers

Phone: 636-433-2272
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 10:45am
Sunday Closed

Bulk Mail Acceptance Hours

Monday 10:00am - 1:00pm, 1:30pm - 3:00pm
Tuesday 10:00am - 1:00pm, 1:30pm - 3:00pm
Wednesday 10:00am - 1:00pm, 1:30pm - 3:00pm
Thursday 10:00am - 1:00pm, 1:30pm - 3:00pm
Friday 10:00am - 1:00pm, 1:30pm - 3:00pm
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
  • General Delivery
  • 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:

11854 Bluff Rd
2.7 miles away

1777 Washington Xing
4.1 miles away

New Haven
1103 Miller St
6.1 miles away

1276 N Highway 47
7.2 miles away


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Yesterday I let my carrier know that I might not be home to grab my packages from him and if I wasn't to leave them under the carport. He said that was fine (That's what both the carriers normally do anyway). So the at least 3 packages with priority shipping that were supposed to arrive here today from Amazon and maybe others say they were attempted to be delivered at 6:19. I've been home since 5pm and my mail was in my mailbox when I got home then and I have no packages. I pay a lot of money to have these items delivered in a timely manner....Sometimes have packages arrive daily so multiple deliveries at my address are not uncommon. So either the carrier had a hot date and decided to lie about delivery or he just decided he didn't want to mess with it today. IDK, but I have kids crying bc their stuff isn't here and I run a business from home and had packaging supplies and boutique orders that were supposed to be arriving so I am not happy right now!

* is not a part of, or affiliated with, the official United States Postal Service (USPS).