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.

Dear editor, The United States Postal Service proudly provides mail delivery for local businesses and residents. As a ...

A letter without a ZIP code may not reach its intended destination. That is because of the way addresses are read by automated postal systems.

The U.S. Postal Service plans to allow Americans to take their ZIP codes with them when they move, NPR's Andrea Seabrook reported on April 1. No, the Postal Service has not lost its mind — April ...

Green officials say the current system, which splits the city between multiple postal codes, creates tax collection problems ...

This has been as issue in some communities throughout the nation for decades, including in Anne Arundel County, with some neighborhoods in north county sharing the same ZIP codes with sections of ...

Estero ZIP code postal flap The U.S. Postal Service will allow all residents of Estero to use the village as a mailing address, even if their ZIP code comes back as a Fort Myers or Bonita address.