1317 S Diamond Bar Blvd, Diamond Bar, CA 91765
Toll-Free: 1-800-Ask-USPS® (275-8777)
PO Box Access Available
Monday 6:00am - 6:00pm
Tuesday 6:00am - 6:00pm
Wednesday 6:00am - 6:00pm
Thursday 6:00am - 6:00pm
Friday 6:00am - 6:00pm
Saturday 6:00am - 5:00pm
*This facility does not process US Passports applications or renewals. Check nearby locations below.
We provide you with the contact details of the Diamond Bar Post Office, including its address, phone number and retail hours. This way, you will be able to ask for assistance with USPS shipping and mail services, either by phone or in person.
If you visit the Diamond Bar Post Office, please tell us about your experience. It can be helpful to others looking for USPS customer service.
Don't forget to take a look at our FAQ section. It may help you clarify some doubts before contacting your local post office.
Services offered at this location:
- Business Line
- Business Reply Mail Account Balance
- Business Reply Mail New Permit
- Money Orders (Domestic)
- Money Orders (Inquiry)
- Money Orders (International)
- Philatelic Services
- Pickup Accountable Mail
- Pickup Hold Mail
- PO Box Online
- Lot Parking
Frequently Ask Questions at Diamond Bar Post Office
You can find your tracking number on your sales receipt, self-service kiosk eReceipt, mailing receipt, online label record or below the barcode placed on the mailed item.
Local Post Offices do not have a way to recover a lost tracking number. If the recipient is a current Informed Delivery subscriber, they will be able to see the tracking number on their dashboard.
If your move is temporary, USPS can forward your mail from your old address to a new one for 15 days to one year.
Sing in to your USPS account and check if hold mail service is available for your address. If it is, choose the dates for your hold mail request. Remember that it must be for a minimum of 3 days and a maximum of 30 days. If you need USPS mail hold for more than 30 days, you must sign up for forwarding service. For permanent move, you must change your address with the USPS.
You can request a USPS change of address online or by filling out the PS Form 3575 acquired from your local Post Office. Please note that when your request is made online there is a $1.05 identity validation fee.
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