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“Huge thank you to Jeremy for being so helpful during the process of mailing out save the dates and wedding invites. I originally had gone to the upland post office to mail my save the dates but when I inquired about something specific they said they “didn’t have that service” which I know for a fact was not true. Then I drove to Rancho and Jeremy immediately helped me with what I needed. Amazing experience, and so much so that I went back when mailing my invites and was helped by him again. Thank you Jeremy for your great customer service!!!”
“Always very helpful, informative, understanding and professional. I never had issues, I always felt a sense of welcome. Carrie is a very good owner of this post office. Very kind. Always helps with any questions, and is helpful with explaining things that benefit our mailing services needed.”
“I came to this location to drop off
packages after being denied the ability to drop off boxes at the Arrow USPS location. Jojo at this office was not only very friendly, but wrote down the Holt USPS location address for me without asking. This is what real customer service is!”
“Truly friendly staff members. Deanna helped me with my passport application and she was very fast and friendly. She was great and was very knowledgeable. I would recommend to anyone to get your passports here! Definitely will return”
1:30 - 3:30PM 9:30AM - 1PM
6730 Mt Baldy Rd, Mt Baldy
Post Offices
“Adorable little post office for the residents of Mount Baldy. Rustic architecture and next to Fire Department. Mailbox is outside. Local town information is found here and P.O. boxes are inside. Nice respite on way to hiking trail at Icehouse Canyon (be sure to get your permit at US Forestry) on the left hand side---north of this location.”
“Sergio the manager or person in charge definitely runs a tight ship, has all his clerks on check and on point, they have helped me tremendously on all my shipping needs for my business, his mail carriers too do a great job. I've had a few issues here and there but Sergio addresses it promptly anytime I have brought it to his attention. Love this post office, been coming here for years.”
“I am responding to the several selfish, unthoughtful negative reviews posted recently. I have come to this post office for more than 20 years, beginning from the time I was a student at the nearby colleges. I have noticed how USPS head office have steadily reduced the staff, services, and capabilities here while the number of customers has remained the same or grown. Head Office has set up this post office and hundreds more like it to fail. Your unthoughtful complaints are not helping. Meanwhile, staff here struggle valiantly on. I thank them for doing their best in spite of conditions beyond their control. May I recommend before you slam the staff here that you consider writing first to USPS Washington DC and your representatives. Thank you.”
“Good old usps. Today was trying to mail a memorial for my cousin's son who passed away. Fed ex quoted 138 dollars to send the package. Ups quoted 200 dollars for the same package. Good old usps offered 52 dollars with tracking. Can't beat that. Salutations to usps and it's staff for bringing good prices while maintaing excellent service to common man . Sometimes government does work.”
“It was packed eight minutes before closing. There was 14 people all with packages. I had three. A couple people had a lot of questions and needed guidance. The postal workers were very patient and accommodating and friendly and knowledgeable and they actually got all of us out of there happily without having to go past 5:00pm. WOW! They are ? good. Thank you Ontario Post Office. Way to go.”
“Effective: There was a notice posted on the door. On Saturday, May 30, 2026, this post office closed. If you need PO service go to 123 W. Holt or the other one farther east on Holt or Arrow Highway/3rd St in Upland.
I liked this P.O. because it was smaller and the staff was very nice, pleasant and courteous.”
“I've been here a couple times, only to ship things out, the employees are so helpful and from my experience kind. They have a variety of boxes and mailing stuff, and also have cards.”
“They have multiple services at this address. They have PO BOXES, they have a contract with USPS that allows them to do certain transactions on behalf of the USPS
It's a pharmacy, with many other items for sale.
You might find what you need here.
They don't have the kitchen sink but they have a billion other items you might need”
“Had a wonderful experience here last week when I went in for Passport service. Alma was great, she was so kind and friendly and extremely helpful. Front staff was nice greeted u with a smile. Will definitely be back . (Customer Service Matters.) Thank you Alma.”
“I had a great experience here at this location in regards to their Passport services. Passport services are by APPOINTMENT ONLY. It was super easy to book an in person appointment online through the USPS website. When I arrived, it was busy as usual & there was a line. They separated the lines into two, with passports standing to the side. Per appointments, it went by pretty quick. Christy provided amazing guest service. She was efficient, thorough, friendly and quick. It was my first time applying for a passport and she guided me step by step with ease. They do provide money orders & on site passport photos. I was in and out the post office within 20 minutes. Limited parking in the front. Handicap accessible. Self service kiosk desk available.”
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“The staff who serve me today at this USPS location have an excellent attitude. Typically, bureaucratic behavior is rampant in these institutions, and many of the service staff tend to have bad tempers, poor attitudes, and are quite lazy, behaving as if they're being pampered.”