Zip code random generator
Format only, not authenticity - each code matches the correct shape for the chosen country but is not drawn from or checked against any real list of assigned postal areas. For format-only testing (form validation, demo data), not for genuinely deliverable addresses.
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What it is for
Filling out a form, seeding a test database or populating a demo with realistic-looking postal codes without using anyone's real address. Each generated code matches the structural format of the chosen country's postal codes - the right number of digits or letters in the right pattern - but is not drawn from, or checked against, any real list of assigned postal areas.
Format, not authenticity
These are randomly generated to the correct shape only. A generated US ZIP code will look like 48213 - five digits, valid as a shape - but is not guaranteed to be an assigned, deliverable ZIP code, the same way this tool's format validator cannot confirm a code is real either. For genuinely deliverable test addresses, a proper test-data or postal lookup service is the right tool; this is for format-only testing, such as checking that a form's validation regex accepts and displays a correctly shaped code.
Bulk generation
Generate anywhere from one code to a few hundred at once, one per line, ready to paste into a spreadsheet or a test fixture.
Related tools
See the zip code format validator and the UUID generator for other kinds of test data.
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