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 ...

Disclosing zip codes allows "people [to] track their purchases. It creates a profile and that information can be shared with other companies and that's dangerous to have that information in one ...

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.