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.

The House passed two bills Monday night that would authorize the U.S. Postal Service to create 76 new ZIP codes for communities nationwide.  These ...

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

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

Why are zip codes and postal codes important when it comes to credit card transactions and when do they overlap for Canadian credit card users?

ZIP codes are five-digit numbers, such as the famous 90210. Why credit card postal codes and ZIP codes matter Your postal code or ZIP code acts as a security measure.

The U.S. Postal Service began using the five-digit ZIP code in 1963. In recognition of the anniversary, we've examined the list of more than 40,000 ZIP codes and highlighted a few that deserve ...