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Introducing the OS NGD API from Postcoder

Postcoder now gives you direct API access to the Ordnance Survey National Geographic Database (NGD), the UK's most detailed and up-to-date geographic dataset.

Introducing the OS NGD API from Postcoder
Product Daniel Cooper Published on 27 Oct 2025

Whether your business operates in retail, ecommerce, fintech, travel or another sector, understanding the physical environment is key to staying competitive. With the Ordnance Survey National Geographic Database (NGD), you can now tap into that insight more easily than ever before.

OS National Geographic Database (NGD)

The OS NGD contains detailed information on over half a billion geographic features across Great Britain, Northern Ireland, the Channel Islands and the Isle of Man. It covers everything from Royal Mail addresses, UPRNs and property coordinates to pre-build addresses and non-addressable objects like public parks and ponds.

More data, more often

One of the biggest changes from other OS datasets - such as AddressBase - is frequency and scale. Whereas products within the OS AddressBase family are updated weekly or even every six weeks, the OS NGD is refreshed daily. That means your website, app or platform can work with the most current address data available. You also get access to more data than ever before, with millions of data points that can be easily searched and analysed through Postcoder.

Why it matters

The OS NGD is already being used by the UK Government and many public sector organisations. But it's not just for government - it's for any organisation that needs to understand where things are, what's around them and how places connect.

OS NGD API through Postcoder

Postcoder provides an integrated set of API endpoints for accessing OS NGD records - including an autocomplete service that returns intelligent real-time suggestions as users type. Even better for existing customers, the data can be requested and returned in the same familiar format as Royal Mail PAF or OS AddressBase, making integration fast and hassle-free.

Whether you’re adding the OS NGD into an existing solution or building something new, Postcoder ensures a smooth experience from start to finish.

Ready to explore?

Try the OS NGD API for free today through Postcoder. Enable access from the Features page on your existing Postcoder account or contact us to get started.

Explore the API docs:

Explore OS NGD address autocomplete
Explore OS NGD address lookup