There is presently a ZIP Code boundary along Addison Street in Chicago. Addresses south of this boundary have a ZIP code of 60657, while addresses north of it, including Wrigley Field, have a ZIP code of 60613.
The Chicago Cubs, who play their home games in Wrigley Field, are the only team that was playing in the major leagues in 1963--when ZIP codes were first used-- that has not appeared in the World Series at least one time since then.
Giving Wrigley Field a currently unused ZIP code, such as 60676, would remove any possible negative affiliations with the number 13, without forcing the long-time residents of the area to suffer any inconvenience
Read more at http://bluebattinghelmet.wordpress.com/2012/06/02/forget-about-the-goat/