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

Lobby Hours
PO Box Access Available

Monday 24 hours
Tuesday 24 hours
Wednesday 24 hours
Thursday 24 hours
Friday 24 hours
Saturday 24 hours
Sunday 24 hours

Last Collection Times

Monday 3:45pm
Tuesday 3:45pm
Wednesday 3:45pm
Thursday 3:45pm
Friday 3:45pm
Saturday 11:30am
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
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Sure Money
  • Street Parking

Visit our Links Page for links to Holiday Schedule, Change of Address, Hold Mail/Stop Delivery, PO Box rentals and fees, 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 have always gotten fantastic service from ALL the staff at the Sumas WA post office. Second to none in my book. I could not be happier with this great group of people, , AAAA++++


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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