Post Offices

Post Offices in & near Seal Beach, California. Operating hours, locations, phone/fax number, services information.

Mariner Post Office

Mariner Post Office in Seal Beach, California on Main St. Operating hours, phone number, services information, and other locations.

Address: 221 Main St, Seal Beach, CA 90740
Phone: 562-598-6915
Fax: 562-598-8785
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Retail Hours

Monday 9:00am - 5:00pm
Tuesday 9:00am - 5:00pm
Wednesday 9:00am - 5:00pm
Thursday 9:00am - 5:00pm
Friday 9:00am - 5:00pm
Saturday Closed
Sunday Closed

Lobby Hours

Monday 6:00am - 7:00pm
Tuesday 6:00am - 7:00pm
Wednesday 6:00am - 7:00pm
Thursday 6:00am - 7:00pm
Friday 6:00am - 7:00pm
Saturday 6:00am - 7:00pm
Sunday Closed

Last Collection Times

Monday 4:45pm
Tuesday 4:45pm
Wednesday 4:45pm
Thursday 4:45pm
Friday 4:45pm
Saturday 2:00pm
Sunday Closed