Learn the history and meaning of usps postal codes, why it's called a ZIP code, whether a postal code is a ZIP code, and what ZIP code numbers stand for.

The House voted to establish new ZIP codes for communities. If the Senate also signs on, USPS will create 76 new ZIP codes.

Postal Code Meaning: How to Decipher the 5-Digit Number The meaning behind postal codes is actually more intricate than you might assume. While some ZIP codes have taken on a life of their own in ...