This site generates synthetic United States address data for software testing. It exists because the alternative — copying production customer records into a staging database, or typing "123 Fake St" into a form and hoping the validator accepts it — is either a privacy risk or a test that proves nothing. Every record here is fictional, and every record is structurally valid.
A generated address is not a random string. The generator starts from geography: it picks a state, then a city that exists in that state, and from that one choice it derives the county, the ZIP code, the telephone area code, the coordinates and the timezone. Because everything downstream comes from the same source row, the parts of an address can never contradict each other — a city is never paired with a county it does not sit in, and a ZIP code is never paired with a city that does not use it.
The postal registry behind that is explicit rather than computed. Each of the 296 cities carries the full list of ZIP codes it actually uses, checked against USPS records: type STANDARD only, so PO Box and single-recipient ZIPs never end up attached to a street number, and matched to the county the entry names. Independent cities are handled as the separate jurisdictions they are — Baltimore City is not Baltimore County, St. Louis City is not St. Louis County, and Virginia's 38 independent cities are not counties at all.
The street number and street name are invented. The final four digits of a ZIP+4 are invented. The recipient names, company names and telephone subscriber numbers are invented. What is real is the frame around them: the city, the state, the county, the ZIP prefix, the area code, and the USPS Publication 28 formatting. That combination is deliberate. It is what makes a generated record pass an address form's validation and a parser's expectations without corresponding to any real household or business.
Generation happens statelessly. Addresses, UUIDs, passwords and placeholder text are produced on request and not logged, stored or associated with a visitor. Nothing about the tools requires an account, and there is nothing to sign up for. The rate limiter briefly holds an IP address to keep the free API available to everyone; that is described in the Privacy Policy.
Street suffixes, secondary unit designators and directionals follow the Postal Addressing Standards, and the same tables drive both the generator and the published abbreviations reference. When the standard and convenience disagree, the standard wins.
Where the data has been wrong, it has been fixed rather than papered over. City ZIP coverage was once derived from numeric ranges, which meant a city could emit a neighbouring city's codes; that was replaced with explicit per-city lists. Where a fact cannot be verified, the page says so instead of guessing — the abbreviations reference states plainly which part of Publication 28 Appendix C1 it covers.
QA engineers writing end-to-end tests against checkout and registration flows. Backend developers seeding staging databases. Front-end developers who need address strings that exercise directionals, suite numbers and long city names. Technical writers producing API examples that will not expose a real address. Anyone who needs a US address that behaves like a real one and belongs to no one.
If a generated record looks wrong — a ZIP that does not belong to its city, a county that does not exist, an area code that has been retired — that is a bug worth reporting, and the contact page reaches the people who maintain the data. Corrections to the postal registry are treated as defects, not suggestions.
"These are randomly generated, fictional addresses. They do not correspond to real locations or residents. For software testing and development purposes only."