Montclair Post Office

5186 Benito St, Montclair, CA 91763

Contact Numbers

Phone: 909-624-5438
Fax: 909-626-8096
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

Monday 7:30am - 6:00pm
Tuesday 7:30am - 6:00pm
Wednesday 7:30am - 6:00pm
Thursday 7:30am - 6:00pm
Friday 7:30am - 6:00pm
Saturday 7:30am - 5:00pm
Sunday Closed

Last Collection Times

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 3:00pm
Sunday Closed

Passport Appointment Hours*

Monday 9:30am - 2:30pm
Tuesday 9:30am - 2:30pm
Wednesday 9:30am - 2:30pm
Thursday 9:30am - 2:30pm
Friday 9:30am - 2:30pm
Saturday Closed
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

*An appointment is required to apply for or renew US Passports. Please Call or schedule online.

  • 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)
  • Packaged Stamps
  • Passport Acceptance
  • Passport Photo
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Sure Money
  • Lot Parking
  • Passport Appointment Hours

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:

Plaza Center
1126 N Mountain Ave
0.9 mile away

140 Harvard Ave
1.3 miles away

Downtown Ontario
123 W Holt Blvd
1.7 miles away

5375 Walnut Ave
2.0 miles away


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Again, my outgoing mail was not picked up. New mail was put on top of outgoing mail. I tried calling Sergio, but after hours, 5:30ish. Will call Tuesday!!! Montclair, CA 91763


You are amazing!!! Montclair office doesn't answer--ever. About twice a month I mail two books to a friend. Handled well in Montclair--not so much in Fresno--destination. Fresno has lost two books with NO EXPLANATION and now the intended receiver received something she doesn't even recognize but NO BOOKS. (Pink tulle handing out of both ends is what she received). What is she supposed to do OR ME???


Terrible that no-one answers the phone. I dropped off a record and it was not shipped. Their phone is never answered. My customer is upset and it makes me look bad, not you! How about you have a little customer service so people who use your post office can find out what happened to their items once dropped off. AWFUL POST OFFICE - PROBABLY LAZY OR THIEVES.


tracking # 9405511202079587289109 deliver to 5180 holt blvd.. montclair ca 91763 chris amato


We have lived in Montclair for 30+ years and the level of postal delivery has always been pretty good. That is until our postman Henry retired. The new carrier who has taken over his route is awful. We get neighbors mail in our box and they get ours quite often. Today the mail was shoved into the box and Christmas cards were folded in half due to the uncaring manner of the carrier. I don't know who this new carer in our area is but he/She needs to be more careful and respectful of our mail.


Postal Delivery SUCKS!
• Replied to Re; new delivery person

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