Geocoding — entry 067 of 80
PostalCodes
Postalcodes.info is a free, keyless postal-code reference covering 123 countries and 1.8M+ records: a same-origin JSON search/autocomplete endpoint backs canonical HTML lookup pages, and full per-country exports are available as CSV, JSON, or XLSX downloads via a same-origin download token. There's no separate API host — everything is served from the canonical postalcodes.info domain — and no Access-Control-Allow-Origin header is returned, so cross-origin browser calls need a server-side proxy.
AuthenticationNone requiredCall it straight away — no key, no signup.
HTTPSSupportedTraffic is encrypted in transit.
CORSDisabledBrowser calls need a server-side proxy.
PricingFreeNo paid tier — free for the documented use case.
FormatsJSON, CSV, XLSXResponses can be requested as JSON or CSV or XLSX.
GreatAPIs Score
Score80
Authentication25/25No authentication required
Pricing20/20Free to use
Docs0/20No docs or spec available
Formats15/15Supports 3 response formats
Freshness20/20Verified within 6 months
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<a href="https://greatapis.com/api/postalcodes/"><img src="https://greatapis.com/badge/postalcodes.svg" alt="Scored 80 on greatapis.com"></a>Auth quickstart
- No key needed — call it now.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.