In order to send a letter or package through the mail, it is necessary to have the destination ZIP code. The United States Postal Service makes it easy to find a ZIP code if you have the street address and city/state information.
Be sure that you have a valid street address, including the city and state. Visit the USPS website (see link in References below) and click on the "Find a Zip Code" tab on the left, at the top of the homepage screen. This will direct you to the ZIP Code Lookup service.
Type the required street address, city and state information into the form on the USPS ZIP Code Lookup page.
Click "Submit," and the ZIP code information for your address will appear.