Census Output Areas Population Weighted Centroids 2011
This dataset shows the 2011 Census Output Areas (OAs) Population Weighted Centroids. An individual Output Area generally covers a sufficiently small area (subject to meeting minimum population / household counts) so that user defined or ad-hoc areas can be created while maintaining a sufficient level of quality. National Records of Scotland (NRS) produces only one set of OAs and creates all other output geographies using the OA as the building brick. Each OA is assigned to an area in a higher geography by first selecting one of the postcodes in the OA as a ‘master’ postcode. The OA inherits all of the characteristics of the master postcode including its assignments to higher areas and its grid reference. The master postcode was selected using an algorithm which calculates the postcode centroid within an OA which has grid references closest to the population-weighted centre of the OA. An anomaly was discovered in the 2011 Census Output Area (OA) codes which were published on 15 August 2013. The anomaly meant that, whilst all the current 2011 Census OA codes were unique, they did not always run in sequential order by council area. We decided to replace the codes with new ones that start at S00088956 and end with S00135306.
dataset
protocol: WWW:LINK-1.0-http--link
name: National Records of Scotland website
description: Geography – 2011 Census Boundaries
function: information
OutputArea2011_PWC
www.nrscotland.gov.uk
eng
boundaries
Statistical units
publication
2008-06-01
-8.80
-0.71
60.87
54.63
2011
2011
creation
2013-08-15
revision
2013-09-13
publication
2013-09-13
asNeeded
This dataset shows the 2011 Census Output Areas (OAs) Population Weighted Centroids. An individual Output Area generally covers a sufficiently small area (subject to meeting minimum population / household counts) so that user defined or ad-hoc areas can be created while maintaining a sufficient level of quality. National Records of Scotland (NRS) produces only one set of OAs and creates all other output geographies using the OA as the building brick. Each OA is assigned to an area in a higher geography by first selecting one of the postcodes in the OA as a ‘master’ postcode. The OA inherits all of the characteristics of the master postcode including its assignments to higher areas and its grid reference. This dataset shows the 2011 Census Output Areas (OAs) Population Weighted Centroids. An individual Output Area generally covers a sufficiently small area (subject to meeting minimum population / household counts) so that user defined or ad-hoc areas can be created while maintaining a sufficient level of quality. National Records of Scotland (NRS) produces only one set of OAs and creates all other output geographies using the OA as the building brick. Each OA is assigned to an area in a higher geography by first selecting one of the postcodes in the OA as a ‘master’ postcode. The OA inherits all of the characteristics of the master postcode including its assignments to higher areas and its grid reference. The master postcode was selected using an algorithm which calculates the postcode centroid within an OA which has grid references closest to the population-weighted centre of the OA. This is different from the methodology employed in 2001 where the weighting was based on household count alone. In some instances, it was necessary to assign master postcodes manually or deviate from the standard algorithm, for example, if two postcode centroids were equidistant from the population-weighted centre of the OA. Revised 2011 Output Area codes An anomaly was discovered in the 2011 Census Output Area (OA) codes which were published on 15 August 2013. The anomaly meant that, whilst all the current 2011 Census OA codes were unique, they did not always run in sequential order by council area. We understood that this was creating additional work for some users so we decided to replace the current 2011 OA codes with new ones that run sequentially within each council area. The new codes start at S00088956 and end with S00135306. The 2011 Census geography datasets published on 15 August 2013 were removed temporarily from the NRS website while this work was going on. No shape boundaries, population or household estimates for OAs changed as a result of this work, only the 9-character S-code they were assigned. A lookup file linking the archived 2011 OA code to the new 2011 OA code has also been published to help users who have already started work using the archived set of OA codes. The archived set of codes range from S00042605 to S00088955.
publication
2010-12-08
false
Pointfile
ArcGIS 10
The following statements must be used when reproducing or using this material: Copyright National Records of Scotland, contains Ordnance Survey data © Crown copyright and database right (insert year).
Geography
National Records of Scotland
Ladywell House, Ladywell Road
Edinburgh
EH12 7TF
United Kingdom
geographycustomerservices@nrscotland.gov.uk
distributor
Geography
National Records of Scotland
Ladywell House, Ladywell Road
Edinburgh
EH12 7TF
United Kingdom
geographycustomerservices@nrscotland.gov.uk
owner
Geographic Information Science and Analysis Team (GI-SAT), Digital Public Services, DG Enterprise, Environment and Digital
Scottish Government
Victoria Quay
Edinburgh
EH6 6QQ
United Kingdom
publisher
Geography
National Records of Scotland
Ladywell House, Ladywell Road
Edinburgh
EH12 7TF
United Kingdom
geographycustomerservices@nrscotland.gov.uk
pointOfContact
2020-08-06T15:14:48