How to Find a ZIP Code by City and State

Start with the city and state

City names are not always unique across the United States. Include the state abbreviation or full state name whenever possible to narrow the search and reduce confusion between places with similar names.

Understand multiple results

Many cities have multiple ZIP Codes because postal delivery areas are not necessarily the same as city boundaries. A search may return several records for one city, or a ZIP Code may list a preferred city name and other acceptable locality names.

Match the result to the street address

A city-level result is a useful starting point, but it cannot confirm the correct ZIP Code for a particular house, office or apartment. Check the full street address using USPS address lookup before sending important mail.

Use a directory carefully

A ZIP Code directory can help explore records by city and state. Check the record date and source, and treat any directory result as a reference rather than an official delivery confirmation.