BLACK DIAMOND POST OFFICE 98010

Black Diamond Post Office Hours


Retail Hours

Contact Numbers:

Phone: 360-886-9429
Monday-Friday 9:00am - 5:00pm
Saturday-Sunday Closed

Bulk Mail Acceptance Hours

Monday-Friday 9:00am - 3:00pm
Saturday-Sunday Closed

Monday-Friday 8:30am - 5:00pm
Saturday 8:30am - 10:30am
Sunday Closed

Lobby Hours

Monday-Sunday 5:00am - 9:00pm

USPS Shipping Rate Calculator

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James D Marble (Postmaster) james.d.marble@usps.gov
25228 Baker St
Black Diamond, WA 98010

The Black Diamond Post Office is located in the state of Washington within King County. This location serves 5,025 Black Diamond residents with a median income of $89,258. It's estimated that approximately 8,020 packages pass through this post office each year.

Black Diamond Post Office Location


Black Diamond Washington Local Links