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Census 1991 - Output Area Centroids

This dataset shows the 1991 Census Output Areas (OAs) Household 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 household-weighted centre of the OA.


Revisions and Corrections

Correction to 1991 Output Area Household Weighted Centroids

An anomaly was discovered when converting the Ordnance Survey Tile Reference to easting and northing where for some records, the centroid for the Output Area was not falling within the boundary of the Output Area.

Default

Identification info

Metadata Language
English
Character set
UTF8
Dataset Reference Date (Publication)
1993-02-13
Dataset Reference Date (Creation)
1993-02-13
Identifier
www.nrscotland.gov.uk / OutputArea1991_HWC
Publisher
  National Records of Scotland
General Register House, 2 Princes Street , Edinburgh , Scotland , EH1 3YY , United Kingdom
Maintenance and update frequency
Not planned

GEMET - INSPIRE themes, version 1.0

  • Statistical units

GEMET - Concepts, version 2.4

  • statistical data

  • census survey

IPSV Subjects List

  • Censuses

  • Boundaries

Limitations on Public Access
Other restrictions
Other constraints
No limitations to public access
Use constraints
Other restrictions
Other constraints
Open Government Licence
Other constraints

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).

Spatial representation type
Vector
Denominator
10000
Topic category
  • Boundaries
Code
S92000003
N
S
E
W


Temporal reference

Temporal extent
 
Temporal extent
 
 
Code
EPSG:4258
Code
EPSG:27700

Distribution Information

Data format

Data format
Name Version

WMS

1.3.0

WFS

2.0.0

ESRI Shapefile

1.0

 

Transfer options

Resource Locator
Protocol Resource Locator Name

OGC:WMS

https://maps.gov.scot/server/services/NRS/Census1991/MapServer/WMSServer?

OutputAreaCent1991

OGC:WFS

https://maps.gov.scot/server/services/NRS/Census1991/MapServer/WFSServer?

CEN1991:OutputAreaCent1991

WWW:LINK-1.0-http--link https://webarchive.nrscotland.gov.uk/20241128122624/https://www.nrscotland.gov.uk/statistics-and-data/geography/our-products/census-datasets/1991-census

National Records of Scotland website (archive)

 
 

Data quality info

Quality Scope
Dataset
Conformity
Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
Explanation
Degree
false
Statement

This dataset shows the 1991 Census Output Areas (OAs) Household 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 household-weighted centre of the OA.


Revisions and Corrections

Correction to 1991 Output Area Household Weighted Centroids

An anomaly was discovered when converting the Ordnance Survey Tile Reference to easting and northing where for some records, the centroid for the Output Area was not falling within the boundary of the Output Area.

 

Metadata

File identifier
be9c94dc-1581-45cb-9f09-9271713b5a61 XML
Metadata Language
English
Resource type
Dataset
Hierarchy level name

dataset

Metadata Date
2025-02-11T13:22:42.965Z
Metadata standard name
UK GEMINI
Metadata standard version

2.3

Point of contact

Organisation name

National Records of Scotland

Delivery point

General Register House, 2 Princes Street

City

Edinburgh

Administrative area

Scotland

Postal code

EH1 3YY

Country

United Kingdom

Electronic mail address

geographycustomerservices@nrscotland.gov geographycustomerservices@nrscotland.gov.uk

Role
Point of contact
Point of contact
  National Records of Scotland
General Register House, 2 Princes Street , Edinburgh , Scotland , EH1 3YY , United Kingdom
 
 
 

Overviews

N
S
E
W


Keywords

GEMET - Concepts, version 2.4
census survey statistical data
GEMET - INSPIRE themes, version 1.0
Statistical units
IPSV Subjects List
Boundaries Censuses

Publishing Body

Access the portal
Full access to the portal and metadata.

Associated resources (if any)

Not available


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