Post Offices
Post Offices in & near Black Diamond, Washington. Operating hours, locations, phone/fax number, services information.
Black Diamond Post Office
Post Office in Black Diamond, Washington on Baker St. Operating hours, phone number, services information, and other locations.
Address: 25228 Baker St, Black Diamond, WA 98010
Phone: 360-886-9429
Fax: 360-886-1337
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Retail Hours
Monday 9:00am - 5:00pmTuesday 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 5:00pmTuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 10:30pm
Sunday Closed
Last Collection Times
Monday 10:00am - 3:00pmTuesday 10:00am - 3:00pm
Wednesday 10:00am - 3:00pm
Thursday 10:00am - 3:00pm
Friday 10:00am - 3:00pm
Saturday Closed
Sunday Closed