Billing Postal Code Generator

Billing Postal Code Generator

The billing postal code generator creates correctly formatted ZIP and postal codes for testing checkout forms, payment pages and address validation. Generate US ZIP codes for a specific state, ZIP+4 codes, or postal codes for ten other countries.

Supported formats

Why test postal codes matter

Postal code fields break more checkouts than almost any other input. Canadian codes contain letters and a space, UK postcodes have variable length, Dutch codes mix digits and letters, and US ZIP+4 codes include a hyphen. A form that only accepts five digits silently loses international customers. Generating a list for each country lets you check validation rules, input masks and database column sizes in minutes.

How the codes follow the rules

• US: the first three digits come from the range assigned to the state, so a Florida ZIP starts with 32–34.
• Canada: only the letters allowed by Canada Post are used; D, F, I, O, Q and U never appear.
• UK: codes use real postcode areas such as SW, M, LS and EH with a valid inward code.
• France and Spain: the first two digits are a real department or province number.

Important

These codes are meant for development and QA. Payment providers verify the billing postal code against the bank's records, so a random code cannot be used to make real purchases. Use your provider's documented test values when testing address verification.