is usps open on christmas

Yes, USPS (United States Postal Service) is open on Christmas day, though it operates on a reduced schedule. USPS delivers Priority Mail Express packages on Christmas day, as well as other essential services such as passport and international service. The regular mail and packages are not delivered on Christmas day, but USPS will deliver mail that has been postmarked by the previous business day (Christmas Eve) as well as packages that were sent by priority mail on December 24th or by first-class mail on December 23rd or earlier.