How do you find out your postal ZIP code?

The postal ZIP code is listed on the official USPS web page under ZIP code look up. You need to know the street address, city and state to find your ZIP code.

Simply enter the street address, city and state into the form on the USPS website. The search result provides the correct address with standard abbreviations and formatting, including a 9-digit ZIP code. The first 5 digits are all you usually need to include with your address.

If you are without Internet, a phone call to the local post office will provide you with the necessary code. Oftentimes, the ZIP codes for a local area are printed on the wall of that servicing post office or on the corresponding mail boxes outside the building.