Links to USPS Lookups
These sites are maintained by the USPS and are included here for your convenience.
Find ZIP Code, ZIP+4 and Carrier Route for an Address
Using the "Search by Address”, type in your address and click the submit button. On the next page, you will see the ZIP Code and ZIP+4 for that specific address. If you would like to see the carrier route associated with that address, click the “Mailing Industry Information” link to the right of the address.