PostalDataPI
The most affordable postal code API. 240+ countries and territories, sub-5ms server resp
PostalDataPI is a postal code lookup, validation, and enrichment API covering more than 240 countries and territories. It is designed to support address-related workflows such as shipping-form autofill, where a postal code needs to be checked or completed quickly. The service reports sub-5ms server response times and is built in the USA.
The API is offered as a single pay-as-you-go plan at a flat rate per query, with the same price across all supported countries and territories. Accounts can be topped up manually or through automatic recharging, and balances can be checked at any time. New accounts include 1,000 free queries without requiring a credit card. The service is aimed at developers and organizations that need postal code data at scale, with no tiered editions or seat-based packaging described.
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