Post Offices
Post Offices in & near Cumberland, 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
Ravensdal Post Office
Address: 27200 272nd Ave SE, Ravensdale, WA 98051
Phone: 425-432-4712
Fax: 651-456-6243
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Enumclaw Post Office
Address: 1742 Cole St, Enumclaw, WA 98022
Phone: 360-825-8325
Fax: 651-456-6171
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Enumclaw Carrier Annex Post Office
Address: 1005 Washington Ave, Enumclaw, WA 98022
Phone: 360-802-9309
Fax: 651-306-6525
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Maple Valley Post Office
Address: 22023 SE Wax Rd, Maple Valley, WA 98038
Phone: 425-432-4174
Fax: 651-456-6206
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Buckley Post Office
Address: 219 S River Ave, Buckley, WA 98321
Phone: 360-829-0781
Fax: 651-456-6593
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457