A postal code is a five digit code used to help postal services deliver mail and packages. Here's what the numbers mean and how they determine yours.

Providing consistent, reliable mail delivery will be more difficult if lawmakers dictate ZIP Codes without consideration for ...

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.

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

City's street addresses are scattered across ZIP codes in four other towns, causing tax confusion and emergency response ...