Code-Point Open Getting Started Guide

This technical specification provides detailed technical information about Code-Point Open. It is targeted at technical users and software developers.

Code-Point Open locates over 1.7 million postcode units for Great Britain, each having a notional geographical location. Postcodes are an alphanumeric abbreviated form of an address. Postcode units are unique references and identify an average of 15 addresses. In some cases, where an address receives a substantial amount of mail, a postcode will apply to only one address and is defined as a large-user postcode. The maximum number of addresses in a postcode is 100.

Code-Point Open provides geographical locations for postcodes in Great Britain.

This getting started guide focusses on using the product in comma-separated values (CSV) format.

For general guidance on using the product in GeoPackage format, please see the Getting started with GeoPackage guide.