Validators
Postal Code Validator
Validate postal code format and check common ZIP code and postcode patterns directly in your browser.
Tool
Validate postal code format and check common ZIP code and postcode patterns directly in your browser.
This tool runs in your browser. Your input is processed locally and is not uploaded.
About this Tool
Use this free Postal Code Validator to check whether a ZIP code or postcode looks correctly formatted. It can help detect invalid characters, missing parts, spacing problems, and common country-specific postal code format issues. The check runs directly in your browser and does not verify real addresses.
Examples
- 10115
- SW1A 1AA
- 90210
Frequently Asked Questions
What does this postal code validator check?
It checks whether a postal code or ZIP code matches common formatting rules, including length, allowed characters, spacing, and country-specific patterns where possible.
Does this check if the address exists?
No. This tool checks the postal code format only. It does not contact postal services or verify real addresses.
Is my postal code uploaded?
No. The validation is designed to run locally in your browser.