> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/products/areas-and-zones-portfolio/code-point-with-polygons/code-point-with-polygons-technical-specification.md).

# Code-Point with Polygons Technical Specification

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

This technical specification provides detailed technical information that is designed to help you fully understand the data structure of Code-Point with Polygons.

Code-Point with Polygons is a dataset that contains the notional area of postcode units for Great Britain, allowing customers to display and analyse any data collected at the postcode level. The polygons within the product are derived from georeferenced Royal Mail Postal Address File (PAF) delivery addresses.

Code-Point points coverage is for the United Kingdom (as it includes Northern Ireland postcodes) for all formats apart from GeoPackage, which is Great Britain coverage only, not Northern Ireland. For full details on the Code-Point product's data structure, see the [Code-Point Technical Specification](/os-downloads/products/areas-and-zones-portfolio/code-point/code-point-technical-specification.md).

## What you need to use Code-Point with Polygons <a href="#bookmark1" id="bookmark1"></a>

### Hardware <a href="#bookmark2" id="bookmark2"></a>

Code-Point with Polygons is a data product and does not include software for analysis but can be used with a variety of programs. Code-Point with Polygons can be loaded into a GIS (geographical information system) for display and analysis of the data. Consult your GIS documentation to establish actual system requirements.

### Software <a href="#bookmark3" id="bookmark3"></a>

Most proprietary GIS packages will suffice, for example, MapInfo, ESRI or QGIS products.

## Index

This technical specification includes the following sections:

* [Data supply](/os-downloads/products/areas-and-zones-portfolio/code-point-with-polygons/code-point-with-polygons-technical-specification/data-supply.md)
* [Specification](/os-downloads/products/areas-and-zones-portfolio/code-point-with-polygons/code-point-with-polygons-technical-specification/specification.md)


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