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.

Esri also lets you look up monthly credit card charges per ZIP code or whether your neighborhood has a high percentage of "Financial Optimists" — people who plan to be better off than they are ...

Two lower courts rejected the suit, but the state Supreme Court said a ZIP Code was part of a person’s address and therefore covered by the state’s 1971 Credit Card Act.