Learn the history and meaning of usps postal codes, why it's called a ZIP code, whether a postal code is a ZIP code, and what ZIP code numbers stand for.

Your billing zip code, or credit card postal code, is the five-digit number on the bottom right, which in this sample is 90210. This would be the zip code associated with your billing address. It ...

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.

They are the five numbers that stand for home. Since 1963, ZIP codes have been a part of just about every piece of mail that travels through our system. But what do those numbers stand for?

You may know where 90210 is, but what about 76707? Meet Boulder, Colo.'s local "superhero": the Mighty Zip Code Man. David Rossteicher has memorized more than 30,000 zip codes, a skill that he ...

Is your neighborhood full of laptops and lattes? Pleasantville-style domesticity? City strivers? This map will tell you.