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Postcodes.io
Free UK postcode lookup and geocoding API.
| Category | Geocoding & Address Validation |
|---|---|
| Authentication | No auth |
| Pricing | Free |
| Website | https://postcodes.io/ |
| Docs | https://postcodes.io/docs |
| Last checked | 2026-10-14 |
| As JSON | /api/v1/directory/postcodesio.json |
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