On July 1, 1963, the U.S. Post Office Department introduced the ZIP code program to get a handle on the heaping surplus of mail. Today, those five digits represent much more for American society. Back ...

Today marks the 50th anniversary of the Zone Improvement Plan, the network of ZIP codes we use for everything from mail delivery to credit card security. The U.S. Postal Service began using the ...

An early first anniversary present for some residents of Estero is being delivered, courtesy of the United States Postal Service. The Postal Service has approved using Estero as a mailing address, ...

GOP U.S. Sen. Jim Banks introduced a bipartisan bill this week to ensure the U.S. Postal Service will give five northern Indianapolis suburbs their own ZIP codes, making mail delivery ...

The Corona del Mar post office celebrated a once-in-a-century occurrence when the date matched its ZIP code on Friday.