If you have an address or partial address, you can find the zip code through USPS Zip Code Lookup, a tool on the U.S. postal service's website. You can also search by city or state, or find all cities that are part of a particular zip code.

A postal code is a set of specific numbers, and sometimes letters, that helps postal services deliver mail. A five-digit number generally known as a ZIP code is important in making sure your package is delivered; it identifies a certain postal delivery area in the United States.

Zip code refers to a type of postal code and is used primarily in the United States and the Philippines. The postal code, however, is typically utilized by the rest of the countries scattered throughout the world.