Random ZIP Code Generator

This random ZIP code generator produces 5-digit US ZIP codes, each one paired with the real state its prefix belongs to. ZIP codes are not random digits: the first digit marks a national area, the first three the sectional center facility, and the last two the local delivery area. The generator pins a real state and emits a ZIP whose prefix is correct for it, so the code passes the format and state-consistency checks many forms run.

Developers and QA teams use it to fill ZIP fields in test data, exercise address-validation rules, and check that forms accept well-formed codes. Because each ZIP comes with its state, you can test that state-and-ZIP pairs validate together.

Pick how many you need and press Generate — free, unlimited, and instant. For a ZIP attached to a full street address and city, use the random address generator instead.

ZIP code is the United States name for a postal code — other countries structure theirs differently. The United Kingdom uses alphanumeric postcodes such as SW1A 1AA, Canada uses six-character codes that start with a forward sortation area like M5V, and Germany uses five-digit PLZ codes. If you need a code in another country's local format, the international city address generators below produce a full address with a correctly-structured local postal code.