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From Parliamentary constituencies to council wards, Boundary-Line™ maps every administrative boundary in detail for you. And what's more, it's completely free to download and use.



Due to the exit of the United Kingdom from the European Union, the European Boundaries will be included as Historical Boundaries from the May release.

Bring statistics to life

For academics or policy-makers, Boundary-Line brings the statistics in your reports to life. It lets you show differences between regions or councils using easy-to-read shaded maps.

A robust framework

Monitoring outcomes by area is key for public bodies. Boundary-Line gives you a robust analytical framework to ensure the right communities get the right resources.

Individual properties

When you're consulting on updating boundaries to take account of population change, Boundary-Line lets you show on a map where the line's being drawn, right down to the level of individual properties.

Tomorrow's world

Tomorrow's world

Public bodies release a wealth of data via, census results and other sources. By illustrating your analysis on maps created with Boundary-Line, you'll be able to highlight the social and economic trends shaping changes in how we live and work.

A window into the past

A window into the past

As an addition to the core Boundary-Line product, which is updated twice a year, you can download data showing historical county boundaries from the late 19th Century. This is ideal for historians who need to analyse old census records and archives.

Professional quality, free of charge

Professional quality, free of charge

Mapped at a scale of 1:10 000, Boundary-Line is quality-assured to the same standard as our premium products. But since it's covered by the Open Government Licence (OGL), you can download it for free and use it in a wide range of ways.

How to get this product

Our open data products are covered by the Open Government Licence (OGL), which allows you to:

  • copy, distribute and transmit the data;
  • adapt the data; and
  • exploit the data commercially, whether by sub-licensing it, combining it with other data, or including it in your own product or application.

We simply ask that you acknowledge the copyright and the source of the data by including the following attribution statement:

  • Contains OS data © Crown copyright and database right 2022
  • Where you use Code-Point Open data, you must also use the following attribution statements:
  • Contains Royal Mail data © Royal Mail copyright and Database right 2022
  • Contains National Statistics data © Crown copyright and database right 2022

View all licences

Technical specification

Key FeaturesWhat this product offers
FormatVector Tile, GeoPackage, ESRI Shapefile, GML and MapInfo TAB
Data structureVector
AttributesBoundary-Line contains every type of administrative area for England, Scotland and Wales
ScaleAll boundaries are captured and maintained to a generalised scale of 1:10 000
Update frequencyTwice a year – May and October
SupplyOnline download
CoverageGreat Britain


Success stories

OS data supports Birmingham’s perinatal mental health service

Improving perinatal services in Birmingham with Ordnance Survey (OS) data.

OS data helps keep hospital open in Somerset

Ordnance Survey data provided critical evidence leading to Somerset Clinical Commissioning Group keeping stroke services at two hospitals.

OS pioneers smarter CCTV for Salford

This case study looks at how support and data from OS helped to reduce crime, support local authorities and create much safer, more connected, smart cities in the City of Salford in Greater Manchester.