Port Costa Post Office

3 Canyon Lake Dr Port Costa, CA 94569
Phone: 510-787-2980

Post Office Lobby Hours
Monday 10:00am - 2:00pm
Tuesday 10:00am - 2:00pm
Wednesday 10:00am - 2:00pm
Thursday 10:00am - 2:00pm
Friday 10:00am - 2:00pm
Saturday 8:00am - 12:00pm
Sunday Closed


Port Costa Post Office is a United States Postal Service (USPS) facility in Port Costa, CA. This post office offers a full array of services, including package delivery and first class mail.


Burial Flags
Money Orders (Domestic)
Money Orders (Inquiry)
Money Orders (International)
Pickup Hold Mail
Pickup Accountable Mail
PO Boxes
Priority Mail International®
Sure Money

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