The U.S. Postal Service is launching a set of four "SpongeBob SquarePants" stamps on Aug. 1. A sheet of 16 stamps will be $16 ...

The U.S postal system first began operations in 1775 and its 250th anniversary comes as Trump pursues a far-reaching shake-up ...

Mail deliveries may be impacted on Juneteenth, the holiday in which Americans celebrate the end of slavery in the U.S.