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 ...

The heart of the system is a number – a ZIP Code number. [Text]: 60639 Narrator: Let’s break this one down and see how it works. Each of these five numbers plays an important role. The country is ...

ZIP codes were unveiled in 1962, but it was more than 20 years before the U.S. Postal Service announced nearly 100% compliance with the five-digit system.

The wealthiest ZIP Code in Hawaiʻi may surprise you. It's an area of Honolulu known less for sprawling beachfront estates and ...