Princeton Junction Post Office

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

331 N Post Rd, Princeton Junction, NJ 08550

Contact Numbers

Phone: 609-799-1054
Fax: 609-799-3221
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

Monday 12:01am - 1:30pm, 2:30pm - 11:59pm
Tuesday 12:01am - 1:30pm, 2:30pm - 11:59pm
Wednesday 12:01am - 1:30pm, 2:30pm - 11:59pm
Thursday 12:01am - 1:30pm, 2:30pm - 11:59pm
Friday 12:01am - 1:30pm, 2:30pm - 11:59pm
Saturday 24 hours
Sunday 24 hours

Last Collection Times

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 3:30pm
Sunday Closed

Passport Appointment Hours*

Monday 10:30am - 1:30pm, 2:30pm - 4:30pm
Tuesday 10:30am - 1:30pm, 2:30pm - 4:30pm
Wednesday 10:30am - 1:30pm, 2:30pm - 4:30pm
Thursday 10:30am - 1:30pm, 2:30pm - 4:30pm
Friday 10:30am - 1:30pm, 2:30pm - 4:30pm
Saturday Closed
Sunday Closed

All applications accepted, but processing is limited. Please see State Department Response to COVID-19 webpage for more information.
  • 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
  • Philatelic Services
  • 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:

213 Carnegie Center
0.6 mile away

Palmer Square New
259 Nassau St Ste 2
2.0 miles away

12 Schalks Crossing Rd
2.0 miles away

4599 Route 27
2.9 miles away


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Recently took care of a complicated matter for me, and I am very grateful for their help. I frequent this post office often and am always happy with the service. Wonderful staff!


In the past week or so, I've had to stop payment on two bills that I mailed from my mailbox, because they weren't delivered. It also happened in December. I'm concerned that my mail isn't being handled properly and I want to bring this to your attention. If I can't trust the post office anymore then I guess I'll have to pay my bills online.

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