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.

Intelligent Mail barcode. Image via Wikipedia In 1983, the post office introduced the ZIP+4 scheme. This uses the standard ZIP code plus a four-digit code that targets the precise location.

Wednesday marks the 52nd birthday of the introduction of ZIP codes in the US. Though the explosion of business mail is mostly responsible for the Zoning Improvement Plan (ZIP), the idea started ...

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?

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.

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