Generate random US ZIP codes, as real ZIP codes with their city or as format-valid 5-digit and ZIP+4 codes for any state.
ZIP codes are for testing and games. Pair them only with fictional test data; do not use them to impersonate a real address.
Press Generate for a random US ZIP code. Pick a state to keep results inside that state's ZIP prefix ranges, choose 5-digit or ZIP+4 format and set how many you need, up to 1,000. Real ZIP codes with city draws from 116 in-service ZIP codes paired with their city, such as 90012 Los Angeles, CA; Format-valid ZIP in the state range builds a ZIP from a real three-digit prefix for the state, which is ideal for large batches of test data but may not be an active delivery code.
The first digit of a ZIP code is a group of states running roughly east to west, the first three digits identify a sectional center facility, and the last two a delivery area. ZIP+4 adds a hyphen and four digits for a block, building or PO box range.
| First digit | States | Example |
|---|---|---|
| 0 | New England, New Jersey, Puerto Rico | 02108 Boston, MA |
| 1 | New York, Pennsylvania, Delaware | 10001 New York, NY |
| 2 | DC, Maryland, Virginia, West Virginia, the Carolinas | 20001 Washington, DC |
| 3 | Southeast: Florida, Georgia, Alabama, Tennessee, Mississippi | 33101 Miami, FL |
| 4 | Kentucky, Ohio, Indiana, Michigan | 46204 Indianapolis, IN |
| 5 | Upper Midwest: Iowa, Wisconsin, Minnesota, the Dakotas, Montana | 55401 Minneapolis, MN |
| 6 | Illinois, Missouri, Kansas, Nebraska | 60601 Chicago, IL |
| 7 | Louisiana, Arkansas, Oklahoma, Texas | 78701 Austin, TX |
| 8 | Mountain West: Colorado, Wyoming, Idaho, Utah, Arizona, New Mexico, Nevada | 80202 Denver, CO |
| 9 | California, Oregon, Washington, Alaska, Hawaii | 94103 San Francisco, CA |
Developers and QA teams use random ZIP codes to test address forms, shipping-rate and tax calculators, store locators and data pipelines. The CSV download writes each ZIP as a text formula so spreadsheets keep leading zeros (02108 stays 02108). For complete street addresses use the random address generator.
Real ZIP codes with city are in-service ZIP codes with their city. Format-valid ZIP codes use a real prefix for the state, so they look right and pass format checks, but not every one is an active delivery code.
Yes. Choose the state, or use a link such as ?mode=california or ?mode=texas. Every result stays inside that state's ZIP prefix ranges.
ZIP+4 adds a hyphen and four more digits, such as 90012-4801, pointing to a block, building or PO box group. Choose the ZIP+4 format to add a random plus-four.
Up to 1,000 per click with No repeats. Copy them, or download a text file or a CSV with ZIP, ZIP+4, city and state columns.
New England, New Jersey and Puerto Rico have ZIP codes starting with 0, such as 02108 in Boston. Keep them as text in spreadsheets so the leading zero is not dropped.
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