The zip code for a Mastercard gift card is the five-digit zip code associated with the address from where the card has been purchased. Mastercard gift cards are a great way to give someone a gift.

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 takes the consumer 15 hours to sort out the mess. Foley said that requiring a ZIP code can thwart simple cases of stolen credit cards when an entire wallet wasn’t stolen.