Sumas Post Office Hours

Sponsored Listings:

Retail Hours

Contact Numbers:

Phone: 360-988-2613
Monday-Friday 8:30am - 4:30pm
Saturday-Sunday Closed

Bulk Mail Acceptance Hours

Monday-Friday 10:00am - 1:30pm
Saturday-Sunday Closed

Monday-Friday 8:30am - 4:30pm
Saturday 11:00am - 12:00pm
Sunday Closed

Lobby Hours

Monday-Sunday 12:01am - 11:59pm

USPS Shipping Rate Calculator


Willie Curtis (Postmaster)
534 Railroad Ave
Sumas, WA 98295

The Sumas Post Office is located in the state of Washington within Whatcom County. This location serves 2,409 Sumas residents with a median income of $61,500. It's estimated that approximately 3,845 packages pass through this post office each year.

Sumas Post Office Location

Sumas Washington Local Links