How do you find a ZIP code by city and address?

Zip code information can be obtained for free by using a simple tool located on the U.S. Postal Service's official website. This tool is a quick form that asks for only a street address, city and state. After checking the Postal Service database, the tool returns the zip code.

The form can also be used to locate all zip codes within a given city and state without needing the input of an actual street address. The tool has the ability to provide a standardized version of a street address by entering an address and zip code, or look up a list of cities within a given zip code.