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 ...

Massachusetts Court Rules Zip Codes Can't be Required at Check Out Consumers in Massachusetts no longer have to give their zip code information when making a transaction with a credit card.

Today marks the 50th anniversary of the Zone Improvement Plan, the network of ZIP codes we use for everything from mail delivery to credit card security. The U.S. Postal Service began using the ...