API Endpoints
Interactive demos and live testing for all Postcodes.io API endpoints. Try real requests and see responses in real-time.
Postcode Validation
Validate, lookup, and search UK postcodes with comprehensive geographic data
Lookup a Postcode
GET
api.postcodes.io/postcodes/
Lookup Terminated Postcode
GET
api.postcodes.io/terminated_postcodes/
Lookup an Outward Code
GET
api.postcodes.io/outcodes/
Bulk Postcode Lookup
POST
api.postcodes.io/postcodes
Request Payload
1
Reverse Geocoding
Convert coordinates to postcodes and find nearest locations
Lookup Nearest Postcodes around a Point
GET
api.postcodes.io/postcodes?lon=
&lat=
Bulk Reverse Geocoding
POST
api.postcodes.io/postcodes
Request Payload
1
Geographical & Demographic Data
Access detailed administrative boundaries and demographic information
Find Nearest Postcodes
GET
api.postcodes.io/postcodes/
/nearest
Nearest Postcodes around a Postcode
GET
api.postcodes.io/postcodes/
/nearest
Nearest Outward Code around an Outward Code
GET
api.postcodes.io/outcodes/
/nearest