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

Bulk Mail Acceptance Hours

Monday 10:00am - 12:00pm
Tuesday 10:00am - 12:00pm
Wednesday 10:00am - 12:00pm
Thursday 10:00am - 12:00pm
Friday 10:00am - 12:00pm
Saturday Closed
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 Line
  • 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
  • Lot Parking

Visit our Links Page for 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

Maple Falls
7392 Mount Baker Hwy
8.0 miles away


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The USPS was going to close my account. said I didn’t pick up my mail & the box was full. I called talked with Larry and he remembered me talking with him when I did pick it up. He said he will take care if it. This little PO is very busy even more with tring to reopen after the floods. The people there always put out 110%. Thank you Sumas USPS


Great Service - I am from Canada and cannot get across the border to renew our postbox. US Postmaster Larry helped me immensely by identifying a company in Abbotsford called Letterlock who cross the border twice daily to pick up the mail and pay renewals. A great help in these tough Covid days.


I have a pO Box in Sumas Wa and need to pay for my box. I am Canadian and cannot cross the boarder at this time because of closer how can I pay for it? It was do in April I believe.


Amazing service. I had a parcel arrive from Hawaii minus my name and most of the address. Josh figured it out and sent it to my Shipping/Receiving service where it eventually got to me after some detective work on my part. Kelsey and Jennifer are great too. We always have a laugh.


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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