Post Offices in & near Black Diamond, Washington. Operating hours, locations, phone/fax number, services information.
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
