Montclair Post Office

The Postal Service is classified as an essential government service, and will remain open wherever possible.

8275 E 11th Ave, Denver, CO 80220

Contact Numbers

Phone: 303-333-2305
Fax: 303-322-2314
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 5:30pm
Tuesday 5:30pm
Wednesday 5:30pm
Thursday 5:30pm
Friday 5:30pm
Saturday 1:00pm
Sunday Closed

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

  • 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
  • Sure Money
  • 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:

1550 Dayton St
0.8 mile away

Park Hill
3355 Hudson St
1.8 miles away

1074 S Ironton St Unit D
1.9 miles away

Hoffman Heights
738 Peoria St Ste D
1.9 miles away


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I mailed from my home in Iowa to my son in Denver. I put a tracking number on it as well. My son never received it. He has created a case to find out where this piece of mail is. This is ridiculous to have to go thru this!


The parking lot at this location is just awful! I drove my brand new car thru to drop letters in the boxes out front Sunday night and the pot hole I hit almost swallowed us up! And it's not just that drive thru lane that is bad-the entire place needs resurfaced and soon!


We have been receiving the wrong mail addressees mail consistabtly for the last 3-4 months as well as our mail being delayed after mail holds.


We have not received any mail in 2 days. I call my post office at all hours of the day and no one answers the phone. I call the USpostal service 800 line and the wait is over an hour to talk with someone. This lack of service would not be tolerated anywhere else! Where is my mail? My list office is Montclair


I live in Mayfair and have not received mail since July3. It is now July 9. No one answers the phone at my post office EVER ~ Montclair location. Would someone please tell me what's going on?


Have been calling repeatedly for 5 hours - no answer, just keeps ringing and then a ear piercing tone. They have been holding a package with a wrong delivery zip code for .......................14 days!!!!! Nothing the vendor can do as it should have been returned. What do I have to do - drive 1 hour to get to their office.


We are disappointed this post office never answers the phone. Other post offices do answer but we have tried calling for five days.


Been in line for forty minutes to pick up a package. Still 15 people in line and only one clerk


One clerk on duty and fifteen people in line...good enough for government I suppose

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