Sumas Post Office

534 Railroad Ave, Sumas, WA 98295

Contact Numbers:

Phone: 360-988-2613
Fax: 651-306-6548
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Bulk Mail Acceptance Hours

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

Pickup Services Hours

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

Lobby Hours

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

PO Box Access Hours

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

PO Box Delivery Time

Monday-Saturday 11:30am
Sunday Closed

Last Collection Times

Monday-Friday 3:45pm
Saturday 11:30am
Sunday Closed

Carrier Facility Hours

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

Global Express Guaranteed® Hours

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

*This facility does not process US Passports applications or renewals. Check nearby locations below.

  • Bulk Mail Acceptance
  • Bulk Mail Account Balance
  • Bulk Mail New Permit
  • Burial Flags
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • Duck Stamps
  • General Delivery
  • Global Express Guaranteed®
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Priority Mail International®
  • Sure Money
  • Lot Parking

Visit our Links Page for Change of Address, Hold Mail/Stop Delivery, PO Boxes™ rentals and fees, Rates on Postage Stamps and Freight/Shipping, Holidays, Bulk Mail, Money Orders, and Available Jobs.

*Please call to verify information. Is anything incorrect? Let us know here

Nearby Post Offices:

108 Blair Dr
4.3 miles away

5014 Deming Rd
7.3 miles away

600 Front St
7.9 miles away

2026 Valley Hwy
11.6 miles away


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I've had a PO Box for years in Sumas. The staff is friendly and helpful in Sumas and they remember clients. Well run location.


A mailbox was installed at my home. Packages have previously delivered #9400110898825013044559 on 6/22. Another package arrived In Sumas for delivery for the second time by USPS on 6/27, out for delivery #9400110200830758195733 on 6/ updated indicated undeliverable address. Being returned to sender again. Postmaster needs to be trained on deliver service to his clients in Sumas, WA. Totally unacceptable customer service by USPS Sumas WA 98295.

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