OS Open Zoomstack API Access for British Developers – Zoomstacker

Access OS Open Zoomstack map data for your web and mobile applications with our simple, reliable API.

Important Note: Zoomstacker is an independent service that provides access to OS Open Zoomstack data. It is not affiliated with, endorsed by, or officially connected to Ordnance Survey in any way. OS Open Zoomstack is a free product provided by Ordnance Survey under the Open Government Licence.

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What is OS Open Zoomstack? (UK Coverage & Benefits)

OS Open Zoomstack is Ordnance Survey's free, open vector map dataset covering Great Britain (England, Scotland and Wales). It offers comprehensive geographic detail at scales from 1:10,000 to 1:10,000,000, making it ideal for UK-focused web and mobile applications.

Vector format means you get crisp rendering at any zoom level, with full control over styling. Overlay postcode boundaries, planning zones, Land Registry parcels, transport networks, or environmental data – all on a solid British basemap. No per-tile licensing costs, just simple API access.

High Performance

Vector tiles ensure fast loading times and smooth zooming. Ideal for mobile apps showing British countryside trails or urban congestion in London or Manchester.

Reliable & Secure

API key authentication and domain restrictions keep your data secure and compliant for UK production deployments.

Usage Analytics

Monitor your API usage with detailed analytics and request logs. Analyse traffic patterns and optimise your British mapping projects.

Multiple Styles

Choose from light, dark and other map styles to match your application's design. Customise colours for your brand.

Easy Integration

Works seamlessly with Leaflet.js, OpenLayers and Mapbox GL JS. Simple integration for UK-based open-source projects.

Transparent Pricing

Free tier for development and affordable plans for production use. Pricing in GBP with VAT where applicable.

UK Use Cases

OS Open Zoomstack powers mapping across the UK. Common applications include:

Property apps – Combine Land Registry boundaries with Zoomstack base maps for estate agents and conveyancing tools
Transport dashboards – UK rail, bus and cycle network visualisation for journey planners and congestion monitoring
Environmental monitoring – National Parks, nature reserves and land-use mapping for conservation and planning
Planning & development – Local authority tools, planning applications and infrastructure overlays
Outdoor recreation – Hiking apps, trail maps and countryside navigation across England, Scotland and Wales