July 1st is Zip Code Day

Have you ever wondered were zip codes came from? Have you ever thought about who came up with this system of numbers? I know I have.

On July 1st you can celebrate Zip Code Day by learning the history behind the zip code and what it has done for our mail system.

Find out more about the history of zip codes from the link below.

Zip Codes – History of the United States Post Office

http://inventors.about.com/library/inventors/blmailus4.htm