Gray Summit Post Office

2666 Highway 100, Gray Summit, MO 63039

Contact Numbers

Phone: 636-742-4299
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 11:30am
Tuesday 11:30am
Wednesday 11:30am
Thursday 11:30am
Friday 11:30am
Saturday 9:00am
Sunday Closed

Bulk Mail Acceptance Hours

Monday 9:00am - 11:00am, 11:30am - 2:00pm
Tuesday 9:00am - 11:00am, 11:30am - 2:00pm
Wednesday 9:00am - 11:00am, 11:30am - 2:00pm
Thursday 9:00am - 11:00am, 11:30am - 2:00pm
Friday 9:00am - 11:00am, 11:30am - 2:00pm
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:

Labadie
106 3rd St
2.1 miles away

Pacific
324 W Saint Louis St
2.9 miles away

Villa Ridge
461 Highway M
2.9 miles away

Robertsville
7292 Highway O
3.0 miles away

Reviews

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The worst hours for a post office. Closes before the iggnorant delivery driver gets done with their rounds. Almost impossible for someone to get mail that requires a signature when they have a full time job during the day.
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