You may be asked for your billing ZIP code when making online purchases or providing credit card information over the phone. But what exactly is a billing ZIP code, and why is it important?

One of the most important pieces of data is the billing zip code associated with your credit or debit card. A billing zip code is the zip code associated with the billing address you have on file ...

A five-digit number generally known as a ZIP code is important in making sure your package is delivered; it identifies a certain postal delivery area in the United States. There is also ...