Affton Post Office

55 Grasso Plz, Saint Louis, MO 63123

Contact Numbers

Phone: 314-544-7929
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours







Lobby Hours
PO Box Access Available

Monday 6:00am - 6:00pm
Tuesday 6:00am - 6:00pm
Wednesday 6:00am - 6:00pm
Thursday 6:00am - 6:00pm
Friday 6:00am - 6:00pm
Saturday 6:00am - 6:00pm
Sunday Closed

Last Collection Times

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 5:00pm
Sunday Closed

Passport Acceptance Hours

Monday 10:00am - 4:00pm
Tuesday 10:00am - 4:00pm
Wednesday 10:00am - 4:00pm
Thursday 10:00am - 4:00pm
Friday 10:00am - 4:00pm
Saturday 10:00am - 1:00pm
Sunday Closed

  • Visit our Passport FAQ page for a complete overview of what to bring, what you need to know, and how long it will take.
  • You will need two forms of Identification with copies.
  • A passport quality photo. Available at location.
  • The appropriate application form printed and filled out, and the required fee for applying or renewing.
  • You can find up to date costs, information, and forms at the State Departments Travel Site

  • Burial Flags
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • Duck Stamps
  • General Delivery
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • Passport Acceptance
  • Passport Photo
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Street Parking

Visit our Links Page for links to 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:

Mackenzie Pointe
7217 Watson Rd
1.5 miles away

South County Postal Store
375a S County Center Way
1.8 miles away

Charles J Coyle
1203 Lemay Ferry Rd
2.0 miles away

Sappington
11662 Gravois Rd
2.0 miles away

Reviews

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I didn't receive any mail one day last week and know because a letter I needed to go out wasn't picked up from our clip we use for outgoing mail; anyway, it happened again today and, point being, the letter will be later, hopefully not too late, if not put through today. Today's piece of mail isn't a crucial one but last week's was and I just wanted to say I am generally PLEASED with delivery here but one day last week and now today isn't good news. It may be a sub, don't know, just wanted to comment in the hopes this doesn't happen again and service will be restored to normal. Thanks for listening!
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Affton - one large envelope was folded into fourths (large envelope always fits rolled gently and placed in box) and a birthday card wadded and shoved in. I thought I'd never get my mail out of my mail box.
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I always get mail for the next street over with same house numbers. I mark it to redeliver to proper address and it stays in my mailbox like I haven't picked up my mail. Let's see if three hot pink post-its gets any attention tomorrow. Please train your employees to read English.
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