Montclair Post Office

125 Glenridge Ave, Montclair, NJ 07042

Contact Numbers

Phone: 973-744-9187
Fax: 650-577-4377
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

Monday 6:00am - 7:00pm
Tuesday 6:00am - 7:00pm
Wednesday 6:00am - 7:00pm
Thursday 6:00am - 7:00pm
Friday 6:00am - 7:00pm
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 3:30pm
Sunday Closed

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

  • 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)
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Passport Appointment Hours

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:

Glen Ridge
225 Ridgewood Ave
0.6 mile away

128 Watchung Ave Ste 2
0.8 mile away

North Center
415 Broad St
0.8 mile away

13 Municipal Plz
1.0 miles away


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I bring packages to this location to be shipped and they aren't even scanned into the system for 2-3 days. No one will answer the local telephone number. It's hit or miss as to whether you get someone pleasant or someone awful while waiting in line.


This place is terrible, they don't deliver most of our mail ontime, and there are some days where they barely deliver at all.

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