United States Postal Service

3.1
58 reviews

About

Post OfficeCargo ServiceLogistics ServiceShipping ServicePackaging Supply StoreMoney Order Service
Visit your local Post Office™ at 1126 N Mountain Ave to find everything you need to send mail and ship packages. Explore our other products and services like money orders, Post Office™ boxes, passports, gift cards, and more

Location

United States Postal Service
1126 N Mountain Ave, Ontario, CA
91762, United States

Hours

Reviews

3.1
58 reviews
5 stars
26
4 stars
3
3 stars
4
2 stars
2
1 star
23
  • ML
    Maria Lascurain
    Nov 10, 2025
    5.0
    Great service every time.
  • EJ
    Ernie jr.
    Oct 9, 2025
    5.0
    They have drop bins for prepaid packages. Plenty of parking. Great staff compared to other city post offices. I started my daily package drops at this location about a year ago. No problems the staff of two are always welcoming even after a full day that can be exhausting.(My drops are usually at 4:30)
  • SC
    Samantha Capetillo
    Sep 4, 2025
    1.0
    Wrong hours posted.
  • KP
    Keli Patton
    Aug 28, 2025
    4.0
    After moving I got the p.o box service here and the service was great! Its cost for a P.o box 76.89. Great Customer Service, Great employees
  • SB
    Sean Bearly
    Aug 18, 2025
    5.0
    I'm surprised at all the negative comments. This PO has allowed me to stop getting in the long lines at one on Arrow. I've received only helpful assistance. Someone complained about only one person in line. If your definition of a great PO is to have a long line go to the one on Arrow. Please stay away from this nice little alternative.

Frequently Asked Questions About United States Postal Service

Can I get a passport application at this Post Office?

Yes, Thousands of Post Offices™ accept first-time passport applications for the U.S. Department of State. Most of those locations can also take your passport photo. Please complete and print your passport application form before you apply.

Is an appointment needed for passport services?

Most Post Offices that offer passport services have set hours, and you'll need to schedule an appointment using our online scheduler. We also offer limited Passport walk-in hours at select locations.