Country Information

Postal Code Format Checker

Select a country and enter a postal code. We validate format only against documented patterns. Postal-code format validation does not confirm that an address exists.

Country names are listed in English with ISO alpha-2 codes. Flags are not required to identify a country.

Enter the code as usually written (spaces allowed). Format match ≠ address verification.

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Enter a postal code to check Info

Enter a postal code to check against the documented format for this country.

Documented format
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Your input

Example patterns (illustrative — not verified addresses):

  • 83225

Important distinctions

Format ≠ address
Postal-code format validation does not confirm that an address exists or that a code is currently assigned for delivery.
Unavailable patterns
If a country has no reliable pattern in the dataset, we label it unavailable rather than inventing a rule.

Frequently asked questions

Does a valid postal-code format prove that an address exists?

No. Postal-code format validation does not confirm that an address exists. It only checks structure against a documented pattern.

Why is my country unsupported?

Some territories lack a published pattern in our dataset. We show that clearly instead of guessing a regex.