Lake Oswego Post Office

501 4th St, Lake Oswego, OR 97034

Contact Numbers

Phone: 503-675-4500
Fax: 503-636-6082
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 5:30pm
Tuesday 5:30pm
Wednesday 5:30pm
Thursday 5:30pm
Friday 5:30pm
Saturday 4:00pm
Sunday Closed

Bulk Mail Acceptance Hours

Monday 10:00am - 4:00pm
Tuesday 10:00am - 4:00pm
Wednesday 10:00am - 4:00pm
Thursday 10:00am - 4:00pm
Friday 10:00am - 4:00pm
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
  • 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:

17600 Pacific Hwy
1.2 miles away

11222 SE Main St
1.4 miles away

Sellwood Dcu
8816 SE 17th Ave
1.7 miles away

Oak Grove
3860 SE Naef Rd
2.0 miles away


*Comments below are not read by postal employees. Please do not post personal information.

*By clicking Submit, you agree to our Privacy Policy & Terms of Use.


I needed to mail a box today (Veterans Day) to a family member. I tried the auto-system, but it didn't print a label. Meghan H. offered me assistance and did a fantastic job of figuring out the problem and making it happen. It was great to work with someone who went above and beyond despite the possibility that she would face problems for not meeting expected work quotas; I have a friend who works for the USPS. Thank you Meghan H!!


Went to mail a Xmas package on 12/8/2020. A pair of men’s Timberland boots. Cost to mail $46. Was surprised but paid to have it mailed. Clerk was very rude, not helpful and she started singing. Package arrived in Charlottesville Va. 1/2/2021. I know it’s been really busy but $46 and it takes 24 days. Something is very wrong.


What is your Lake Oswego 4th Street post office's total sf and number of parking spaces, compared to West Linn's P.O. on Hood Street


Phone number is not working. Tried calling several times. Operator says stay on line for next operator and then it goes to fast busy. Not sure how long it's been going on but, has anyone noticed your incoming calls have diminished extensively? Or perhaps there is another # but, this one is all over the Internet. Might want to update. I need to speak with someone at this location specifically - not just USPS generally.


The courier seems to be very selective when they feel like delivering mail I haven't seen service in the last three days Grant you it's snowing but there's a Prius going down the road I'm pretty sure the mail truck can make it as well but they rather sit on their ass at the office and click taxpayers money

* is not a part of, or affiliated with, the official United States Postal Service (USPS).