Regex resource

Postal Code Regex Library

Use a practical postal code regex library for ZIP codes, postcodes, international checkout forms, and QA validation examples.

Test Postal Regex Postal Validation Data

Start with common patterns

Use country-specific postal code patterns for the US, Canada, UK, Singapore, Australia, Germany, France, Netherlands, China, India, Mexico, and Japan instead of one global regex.

Postal code regex tester International validation

Make it testable, not just documented

A regex list is more useful when paired with generated address examples. Test each pattern against real-looking country samples before shipping.