DIAMOND BAR POST OFFICE 91765

Diamond Bar Post Office Hours


Retail Hours

Monday-Friday 9:00am - 5:00pm
Saturday 9:00am - 2:00pm
Sunday Closed

Pickup Services Hours

Monday-Friday 9:00am - 5:00pm
Saturday 9:00am - 2:00pm
Sunday Closed

Monday-Sunday 12:01am - 11:59pm

PO Box Access Hours

Monday-Sunday 12:01am - 11:59pm

Monday-Saturday 11:00am
Sunday Closed

Last Collection Times

USPS Shipping Rate Calculator

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Christina Hsu (Postmaster) christina.i.hsu@usps.gov
1317 S Diamond Bar Blvd
Diamond Bar, CA 91765

The Diamond Bar Post Office is located in the state of California within Los Angeles County. This location serves 46,457 Diamond Bar residents with a median income of $91,670. It's estimated that approximately 74,151 packages pass through this post office each year.

Diamond Bar Post Office Location


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