An Introduction to 2011 Census Geography
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This webinar provided an introduction to 2011 Census geography. It discussed key differences between the 2011 Census and previous censuses, including that 97.4% of output areas changed. It also covered new aspects like workplace zones geography and standardized identifiers. The webinar demonstrated Census Support tools for accessing and mapping UK census data through the UK Data Service.
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An Introduction to 2011 Census Geography
- 1. An introduction to 2011 Census geography James Crone Webinar 17 May 2013
- 2. Welcome An introduction… James Crone UK Data Service EDINA GeoServices University of Edinburgh
- 3. This webinar is one in a series to launch the UK Data Service: •An introduction to data available from the UK Data Service MONDAY 13 May 2013 •Broadening access: Improving the impact of social data TUESDAY 14 May 2013 •Looking after and managing your research data WEDNESDAY 15 May 2013 •UnDISCOVERed riches: Finding and accessing data via the UK Data Service THURSDAY 16 May 2013 •An introduction to 2011 census geography FRIDAY 17 May 2013 Welcome
- 4. What is the UK Data Service? • a comprehensive resource funded by the ESRC • a single point of access to a wide range of secondary social science data • support, training and guidance
- 5. Who is it for? • academic researchers and students • government analysts • charities and foundations • business consultants • independent research centres • think tanks ukdataservice.ac.uk
- 6. What is Census Support? • access to, and user support for, data from the last five UK population censuses (1971 – 2011) • download of data through Census Support is currently restricted to UK Academic users census.ukdataservice.ac.uk
- 7. Poll Have you used census data before? • No • Yes, for the UK • Yes, for outside the UK
- 8. The 2011 Census and census geography
- 9. What is a census? “The total process of collecting, compiling, evaluating, analysing and publishing demographic, economic and social data pertaining at a specified time, to all persons in a country or well delimited parts of the country” United Nations (1998)
- 10. The census in the UK Contains National Statistics data © Crown Copyright and database right 2012 Contains Ordnance Survey data © Crown Copyright and database right 2012
- 11. Household census questions • accommodation type – house or flat? • own or rent? • how many rooms?
- 12. Individual census questions • male or female? • age? • country of birth? • health?
- 13. What sort of output data is produced?
- 14. Output census data is geographic
- 15. Geographical visualisation / analysis Contains National Statistics data © Crown Copyright and database right 2012 Contains Ordnance Survey data © Crown Copyright and database right 2012
- 16. Census Output Areas Contains National Statistics data © Crown Copyright and database right 2012 Contains Ordnance Survey data © Crown Copyright and database right 2012
- 17. Making 2011 output areas • use where possible 2001 output areas • built from aggregations of postcodes • have roughly similar-sized populations • group together socially similar households • align with local authority boundaries • align to road centrelines and railways
- 18. 2011 Census geography hierarchy Contains National Statistics data © Crown Copyright and database right 2012 Contains Ordnance Survey data © Crown Copyright and database right 2012
- 19. Different geographic scales Contains National Statistics data © Crown Copyright and database right 2012 Contains Ordnance Survey data © Crown Copyright and database right 2012
- 20. Poll Which years have you used UK census data for? • 1971 • 1981 • 1991 • 2001 • 2011
- 21. 5 key differences in 2011 Census geography
- 22. Difference #1: output area change
- 23. 97.4% How much output area change?
- 24. What kind of output area change (in Leeds)? Map created by Alex Singleton Contains National Statistics data © Crown Copyright and database right 2012 Contains Ordnance Survey data © Crown Copyright and database right 2012
- 25. Difference # 2 : open data You are free to: • Copy, publish, distribute and transmit the Information • Adapt the Information • Exploit the Information commercially You must, where you do any of the above: • Acknowledge the source of the information Contains National Statistics data © Crown Copyright and database right 2012 Contains Ordnance Survey data © Crown Copyright and database right 2012
- 26. Difference #3: workplaces • Introduction of a Workplace Zones Geography in 2011
- 27. Workplace zones vs. output areas Contains National Statistics data © Crown Copyright and database right 2012 Contains Ordnance Survey data © Crown Copyright and database right 2012
- 28. Difference # 4: identifiers
- 29. Entities + Instances = standard identifers E00126679 E07000118
- 30. Difference # 5: boundary versions
- 31. Extent of the Realm boundaries Contains National Statistics data © Crown Copyright and database right 2012 Contains Ordnance Survey data © Crown Copyright and database right 2012
- 32. Clipped boundaries Contains National Statistics data © Crown Copyright and database right 2012 Contains Ordnance Survey data © Crown Copyright and database right 2012
- 33. Clipped = more familiar maps EOR Clipped Contains National Statistics data © Crown Copyright and database right 2012 Contains Ordnance Survey data © Crown Copyright and database right 2012
- 34. Generalised boundaries Contains National Statistics data © Crown Copyright and database right 2012 Contains Ordnance Survey data © Crown Copyright and database right 2012
- 35. Generalised = reduced file size Ungeneralised Generalised 125 MB450 MB Contains National Statistics data © Crown Copyright and database right 2012 Contains Ordnance Survey data © Crown Copyright and database right 2012
- 36. 2011 Census data in UK Data Service Census Support
- 37. UK Data Service Census Support
- 38. Poll Which Census Support applications have you used before? • InFuse / Casweb • Easy Download / Boundary Data Selector • GeoConvert • Postcode Directory Download
- 40. Census Support Boundary Data Selector
- 41. Census Support Thematic Mapper
- 42. More information
- 45. Forthcoming Census Support training http://goo.gl/RpYNA