Mailing packages and want to make sure they make it in time for Christmas?! Here’s what you need to know!

For packages within the United States:

  • Standard post delivery must be sent by December 15 in order to arrive by Dec. 24.
  • For first-class mail delivery, you need to have it mailed by December 19.
  • Priority mail delivery can be mailed by December 21, and priority express can be sent by December 23.


Hours vary by location. Check with your local post office to see if they are opening additional times through the holidays.

The Washington St. Buffalo, NY post office is open: RETAIL – Mon-Fri 8:30am - 5:30pm, Sat 8:30am - 1:00pm, Sun Closed; Dec 24, 2015 - Dec 25, 2015 –

  • Thu 8:30am - 12:00pm
  • Fri 8am - 8pm

Carrier Facility Hours

  • Mon-Fri 8:30am - 8:30am
  • Sat-Sun Closed

The U.S. Postal Service will be closed and no mail will run on Friday, December 25 (Christmas Day) and on Friday, January 1 (New Year’s Day).