How to use
- Paste the ZIP Code into the validation field.
- Review format and check-digit feedback.
- Fix the input if needed — nothing is sent to a server.
What it's for
Validate ZIP Code values for United States workflows during development and QA. Checks run in your browser with no uploads.
Also useful
Need a sample value? Try the ZIP generator.
FAQ
- What does ZIP Code validation check?
- Structure, length, and check digits/checksums when applicable. It does not query official registries.
- Does data leave my browser?
- No. Everything runs locally on your device.
Related tools
- ZIP Code GeneratorGenerate US ZIP and ZIP+4 codes for forms and mocks.
- US Phone GeneratorGenerate North American phone numbers in common formats.
- US Phone ValidatorValidate North American Numbering Plan phone numbers.
- ABA Routing GeneratorGenerate ABA routing numbers with valid checksum.
- ABA Routing ValidatorValidate ABA routing number checksum.
- Bank Account GeneratorGenerate fictional US bank account numbers.