The humble ZIP Code shows up in all kinds of surprising places. Planet Money looks at how it was born, how it transformed the mail and talks to one researcher who argues that it's gone too far.

WASHINGTON — LSU's Baton Rouge campus and the St. Charles Parish community of Montz are set to get a single ZIP code if the U.S. Senate takes up legislation the House approved on a voice vote ...

The next Staten Island zip code to appear on the list is 10306, ranked 39th citywide. With a total of 64 chain store locations, the area includes Egbertville, Grant City, Midland Beach, New Dorp, New ...

Residents of the largest Morris County town − Parsippany − may be assigned mailing addresses from as many as three neighboring towns. Dover and Victory Gardens share a ZIP code. Elsewhere in ...