Watch out for mail-based scams, the U.S. Postal Service said last week. Here are tips on how to protect yourself from fraud and ID theft.

Daniel Steiner, the new postmaster general, should prioritize the delivery of mail and packages six days a week, halt the ...

Ohio was once simply O. In 1831, the Post Office first gave the country its first list of approved abbreviations. States with one-word names were abbreviated with their first and last letters — ...