Got "full mail box notice" saying that they are keeping all the mails, so I need to pick them up at…read morethis location. The notice said that the mails will be sent back to sender if I don't pick the up. So.. Went to this location to pick up my mails. They made me stand there and wait for almost 20 minutes while they are checking for the mails. Guess what answer they gave me "I don't see anything" She sounds like she is unsure if my mails are there or she can't find it, and all she can do is throwing me the phone number of this location to call back and check if my mails are here Spent almost 40 minutes at this post office because of this stupid full mail box notice. They apparently don't know what they are doing.

Still prefer the Claremont or La Verne post offices but I did stop by today to post some mail…read morethrough the inside mail slot and saw these cute reindeer in the lobby. Had to post a picture.

I stopped in here after work on a Monday recently to get a FBI criminal background check via…read morefingerprints to be used for a travel visa application. The staff that helped me was very nice and friendly. He was also very patient as the fingerprint reading machine was very finnicky. The cost for the service was $50. The history summary was ready fairly shortly. I was emailed a link and PIN to access the summary.

Had to pick up a pkg at the Post office that wasn't delivered yesterday…read more Supervisor was terrific in explaining the situation and finding my pkg.

It's a nice post office, and is as most post offices are…read more I'm actually only leaving a review b/c the address on Yelp is WRONG. It had me go to plaza off of Grand and CH Pkwy, when it's off of Grand and Peyton!!

1 star for being a standing location. 0 stars for customer service especially applying for a…read morepassport. We had an appointment scheduled for 1 hour for 4 people. The employee was so rude. Acting like we owe him something. I hated every minute of it. He got the job done, but in the manner it was handled was inappropriately rushed. He scolded us like as if we owed him something. I hope this person Peter will be replaced soon. Or, retire already.

The closest post office to me unfortunately, with only one self service kiosk that's always off for…read moresome reason or out of service. This causes this Diamond Bar location to always have long lines, and there's always this one employee working their hardest (the woman working on 4/10/26) to get thru the line. Sometimes if you're lucky there would be two people. Parking is usually fine, sometimes the lot will get full so you'd have to wait or park elsewhere near the plaza. Check out the Chino Hills location, they have 3 self service kiosks and i've never had any issues with wait times/downed kiosks there. Plus the parking is never an issue there.

This place needs to seriously close down. Its a ghost town during their "operating hours". Packages…read moreare always lost or they put a "sorry we missed you" but they don't even attempt to make the delivery. Misuse of funds to keep this place open honestly. Have even noticed packages with tracking numbers marked as "delivered" but theres no sign of a postal worker at that time delivering mail. The other night I even saw a postal truck driving back to our street at 9pm, delivering another package. There is no accountability for them delivering the mail.

I had a great experience at the United States Postal Service, thanks to Robert. He was…read moreprofessional, patient, and genuinely helpful throughout my visit. Robert took the time to answer my questions clearly and made sure everything was handled correctly, which really put me at ease. It's not every day you come across someone who goes the extra mile with such a positive attitude. Customer service like this makes a big difference--thank you, Robert, for making what could have been a routine errand a smooth and pleasant experience! God bless, Cedric

I actually needed my passport ASAP, like within a month. I purchased the quickest shipping option…read morefor my passport but before doing so I asked Christy for her thoughts and said didn't believe I needed expedited shipping. I banked on her and so glad I did. Received my passport a little over 3 weeks just in time for my trip. She saved me money. Thank you Christy!

This postal service place is one of the fastest in my opinion. Big shout out to Katarina for…read morehelping me with my passport renewal. She was very patient, kind and explained the whys and hows. Couldn't have done it without her help. Passport photos also took less than 5 minutes. It is a bit of wait but considering every other postal service place I've been, it's quick.

IMPORTANT if you work or live nearby!…read more Our office is a few blocks away from this location, on Towne. Our postal carrier has been NO SHOW for three days straight, resulting in many prepaid packages that needed to be shipped ASAP. We waited on the third day to see if the carrier would actually come. Surprise surprise, they did not. So we pulled into this location at 4:45PM with a dolly full of prepaid boxes. The rude lady behind the counter promptly refused to accept them, saying that our zip code is 91767, which is technically Pomona. Therefore, we could only take our boxes to a Pomona USPS office. What a crock!!!!! UPS, FedEx, DHL, nobody has such a ridiculous problem. The employees are just too lazy to scan the boxes, and therefore refused to accept them even though they were pre-labeled. Don't come to this location. I'm seriously tempted to send in a complaint. You will be treated rudely and refused service.

Excellent service today this morning May 20 9:30 am a young gal waited on me and my wife helped us…read morewith getting our passports she helped us every step of the way so exceptionally polite and nice and patient she said she had not worked there for to long but she was spot on knew exactly what she was doing very efficient and very good customer service I'm old I think her name was Sandy but I'm probably wrong but we're never going to Chino we're going out of our way to come here where people are nice

This is the slowest post office I've ever been to. They closed the post office off Mountain and now…read morethis is the closest to me. There's always one person working and she's slow as can be. No sense of urgency with a line out the door.

The supervisor is very helpful and kind, she responds to clients' concerns and questions promptly…read more The people under her can be unprofessional and rude sometimes, however, she will take appropriate steps and actions accordingly. Not the most customer friendly staff at the window, so you are pretty much at their mercy and remember to remain polite.

Asian lady in front actively ignores other asians and calls out to certain people she prefers to…read morehelp in line. "Hey you in the white you're next." She also is very rude to certain people and switches up in the next second. Never smiles and is always angry looking. Waited 35+ minutes in the line obviously dropping something off and she stared at us and ignored us. Someone from the back came out and explained we could simply leave it after scanning a QR.

Great service at this location. I havent been in quite a long time. The owner remembered me and…read more helped me get my mail i had there for quite a while. I have been using their virtual mail system for my business since 2019. The price is fairly reasonable and hasn't gone up too much since.

Quick and easy drop off if you already have a label. I was able to get in and out faster than I…read morehad thought because the person saw that I already had a label even though they were helping someone else at the same time. I can't really speak to value as I only needed to drop off a package that already had a label from my company, they seemed to be trying to recommend cheaper options to the lady in front of me though. They offer all mail services, so you can choose the option that works best for you or that is cheapest. You just have to ask what your other options are. The person behind the desk is pretty knowledgeable and suggests options based on weight and tracking availability for the package. I was thoroughly surprised that he was trying to suggest options.

This is my go to UPS store to drop off items and do Amazon returns because there's always plenty of…read moreparking in the shopping center. Typically the process goes smoothly with no issues. The only complaint is that during my visit sometimes the employees aren't super helpful and just look at you until you come up to the counter to ask for help instead of helping you to begin with. I can't comment on the price of services since I normally am only here to drop off. Overall the experience is what you'd expect of a UPS store

There service sucks I came in with a big box no knowing that I had to tape it, he was going to…read morecharge me 8 dollars to use their tape and I had to buy a 6 dollar tape to tape it then he tells Me I have to print out my label when it can just be printed out by them ! Don't go here !