However, Canada Post in all its wisdom reserved "H0H 0H0" for Santa's personal use, thereby making a geographic exception for Kris Kringle. "H0H 0H0" has been Santa's very own postal code since 1982.

For some credit card purchases in Canada, a postal code is required as a security measure. If using a credit card in the U.S., you may need to use a ZIP code instead.

Why are zip codes and postal codes important when it comes to credit card transactions and when do they overlap for Canadian credit card users?