ZIP & Postal Codes
Search for a country to see its postal code format, or browse the full list.
Overview
Postal code (ZIP code) formats vary widely by country — some use 5 digits, some combine letters and digits, and some don't use postal codes at all. This tool is a reference table of each country's current format, using the common N = digit, A = letter, C = two-letter country/territory prefix notation (e.g. Canada's "ANA NAN" means letter-digit-letter, space, digit-letter-digit).
This is a format reference, not an address database — it tells you the shape a valid postal code takes for a country, not a lookup from a specific code to a street address (no free, embeddable dataset exists for that, and a paid one is out of scope for this tool).
Examples
Looking up a country's format
Canada
ANA NAN
How It Works
- Start typing a country name.
- The table filters instantly to matching rows as you type.
- Clear the field to see the full list of countries again.
Use Cases
Validating an address form field
Check the expected postal code shape for a country before writing form validation.
Understanding an unfamiliar postal code
Confirm whether a code you've seen matches the format actually used by that country.
Tips
- Some countries have no postal code system at all — those rows are marked accordingly rather than left blank.
- A few countries (Ireland's Eircode, the UK's postcodes) don't reduce to one simple fixed pattern — those rows describe the format in plain text instead of the N/A notation.
FAQ
No. The lookup runs entirely in your browser against a built-in list — nothing you type is sent anywhere.
No — this tool shows the format a country's postal codes follow, not a directory mapping individual codes to addresses.