U.S. Senator Charles Schumer, left, and Assemblyman James Tedisco hold a poster as the push to secure a zip code for Halfmoon is announced at Halfmoon Town Hall Wednesday, Feb. 18, 2015, in ...

The ZIP code system was introduced in the U.S. in 1963, and while they're most commonly known for helping with mail ...

Communities in more than 20 states will get their own ZIP codes if the bill becomes law, including the Hamilton County cities ...

Overwhelmed by the growth of the suburbs and the constant creation of new addresses, the U.S. Postal Service has informed 8,574 customers in the 18103 ZIP code area that their mailing code will ...

About 99,000 mailing addresses fall within that area, and more than 18,000 will be changed to one of the two new ZIP codes, according to Peter Hass, a spokesman for the U.S. Postal Service.

We ran quotes for homes on zip code boundaries in Wauwatosa, Brown Deer, and Milwaukee, and found differences as high as 20% between neighbors living less than 200 feet from each other.