Census geography lookup products
ONS Geography provides a range of products to define names and codes and the relationships between geographies. These products give information on the relationship between 2011 output areas and other geographies and the changes between 2001 and 2011 output areas.
They also provide standard area measurements for 2011 output areas and show the relationship between postcodes collected as part of the 2011 Census and a range of geographies. Information on the relationship between workplace zones and a range of other geographies is also available. Workplace zones are a new geography to support the production of statistics on the working population.
All 2011 Census estimates for all geographies are best–fitted from output areas in line with the Geography Policy for National Statistics.
Please note that the majority of products cover England and Wales and some cover England only. Please contact Scotland and Northern Ireland through their respective websites to obtain data for these countries.
All lookup files contain nine character codes in line with the Geography Policy for National Statistics.
A range of cross reference tables to allow linkage between the 2001 and 2011 output areas and super output areas.
A range of cross reference tables between 2011 output areas to a number of 2011 Census output geographies.
A range of cross reference tables between workplace zones and enumeration postcodes (those identified during the census) to other Census geographies.
All lookup tables are available in csv and text file formats.
Table of geographies
The following output geographies for census are provided:
|Output areas||December 2011||Exact-fit|
|Lower layer super output areas||December 2011||Exact-fit|
|Middle layer super output areas||December 2011||Exact-fit|
|Workplace zones||December 2011||Exact-fit|
|National parks||December 2011||Exact-fit|
|Local authority district||December 2011||Exact-fit|
|Former counties||December 2009||Best-fit|
|Westminster parliamentary constituencies||May 2010||Best-fit|
|Primary care organisations||December 2011||Best-fit|
|Local health boards||December 2011||Best-fit|
|Strategic Health Authorities||December 2011||Best-fit|
|National Assembly for Wales constituencies||May 2010||Best-fit|
|Local administrative units (LAU) 2||December 2010||Best-fit|
|Local administrative units (LAU) 1||December 2010||Best-fit|
|Nomenclature of units for territorial statistics (NUTS) 3||December 2008||Best-fit|
Nomenclature of units for territorial statistics (NUTS) 2
|Nomenclature of units for territorial statistics (NUTS) 1||December 2008||Best-fit|
|Clinical commissioning groups||April 2013||Exact-fit|
|NHS area teams||April 2013||Exact-fit|
|NHS commissioning regions||April 2013||Exact-fit|
|Built-up areas sub-divisions||March 2011||Best-fit|
|Built-up areas||March 2011||Best-fit|
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