Union Gap Post Office

3514 Main St, Union Gap, WA 98903

Contact Numbers

Phone: 509-225-1389
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

Monday 8:30am - 5:00pm
Tuesday 8:30am - 5:00pm
Wednesday 8:30am - 5:00pm
Thursday 8:30am - 5:00pm
Friday 8:30am - 5:00pm
Saturday 8:30am - 5:00pm
Sunday Closed

Last Collection Times

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 4:30pm
Sunday Closed

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

  • Burial Flags
  • Business Line
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • Duck Stamps
  • 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:

205 W Washington Ave
1.5 miles away

301 2nd Ave
2.0 miles away

112 S 3rd St
2.2 miles away

202 E Seattle Ave
3.7 miles away


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My package was delivered to a completely different address, the address is an abandoned home and I don’t see why the carrier would leave it at an abandoned house, still the package is nowhere to be found.


So I had a PKG from Amazon coming in the mail it was already running late and was coming by Friday, well my neighbors have a camera facing our mailboxes and the witnessed the mail carrier toss PKG over the fence and leave . No heads up your PKG is here or hey you mail, nope just tossed and left. Exit stage left. I am utterly disgusted. On top of it I still didn't get the PKG . It was seen being stolen by someone who came into our yard and stole that as well as my neighbors sons shoes. I don't know what can be done but I know it is not me at fault not amazon.. the mail is on 4th Ave and popular who ever delivered on 22. I'm normally very understanding but that is just rediculously in called for

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