Arctic SDI catalogue
Restoration of the 1971 enumeration area polygons for Canada's largest cities
This product contains 23,887 digitally restored 1971 census enumeration area (EA) boundaries for the 33 census metropolitan areas (CMA) defined by the 2011 census. EAs are the smallest geographical unit for the release of 1971 census statistics. These EA boundaries can be aggregated to the census agglomeration (CA) or the CMA level.
The restored EA boundaries also include 1971 population and dwelling statistics. The areas covered by the restored EA polygons account for 61.8% Canada’s total population in 1971.
The purpose of the data set is to provide a historical geography in a digital format. It is intended to be used for reference, mapping and for spatial and time series analyses.
These boundaries were produced by Statistics Canada, Environment, Energy and Transportation Statistic Division in 2017.
The restored 1971 EA boundaries are provided as a single spatial layer. They are also available in Statistics Canada, 2017, “Restoration of the 1971 enumeration area polygons for Canada's largest cities,” Environmental Statistics: Boundary Files, Catalogue no. 16-510-X.
Simple
- Date ( RI_366 )
- 2017-01-30
- Date ( RI_367 )
- 2017-05-24
- Status
- completed; complété RI_593
- Maintenance and update frequency
- asNeeded; auBesoin RI_540
- Keywords ( RI_528 )
-
- Geographic data
- Urban development
- Census data
- Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )
-
- Boundaries
- Use limitation
- Open Government Licence - Canada (http://open.canada.ca/en/open-government-licence-canada)
- Access constraints
- license; licence RI_606
- Use constraints
- license; licence RI_606
- Spatial representation type
- vector; vecteur RI_635
- Metadata language
- eng;CAN
- Metadata language
- fra;CAN
- Character set
- utf8; utf8 RI_458
- Topic category
-
- Boundaries
- Environment
- Begin date
- 1971
))
- Supplemental Information
-
The restored 1971 census EA boundaries are primarily based on scanned EA maps provided by the Statistical Registry and Geography Division of Statistics Canada, as well as original paper and microform 1971 census maps consulted at Library and Archives Canada.
Restored polygons have been completed to cover all areas within the 2011 CMA boundaries in order to allow time series analysis. Either 1971 or 2011 boundaries may be used to delimit the geographic areas. The CMA of Abbotsford, British Columbia was not a CMA or CA in 1971. The 1971 EA polygons are available, but 1971 CMA and CA boundaries do not exist.
The restored 1971 EAs were aligned with the Statistics Canada 2011 Census - Road Network files and the 2011 Census – Boundary files for Lakes and rivers (polygons) and Rivers (lines). These 2011 files were used due to limitations with the spatial accuracy and coverage of the 1971 road network.
As a result of changes in census geography over time, there are 54 restored 1971 EAs that cross the 2011 CMA boundaries: 10 EAs that are split between 2 CMAs and 44 EAs that extend beyond a CMA boundary. In each of these cases, the EA was partitioned at the 2011 CMA boundary and is represented as two polygon records in the boundary file. The population and dwelling statistics for these EAs have been divided and area-weighted for each resulting polygon. As a result, 1971 population estimates may differ slightly from other published sources.
The delineation of small EA polygons representing buildings in densely populated areas is only an approximation of the building footprint and location. The buildings are depicted in the same way as they appear in either the scanned EA maps or the original paper or microform maps.
Reference maps were not available for a small number of geographic areas, all of which contained less than 10 EAs. In these cases, the geographic area was divided by the number of EA points falling within that area, into roughly equal parts, using straight lines.
For further information on terminology and census geography see the 2011 Census Dictionary.
Field descriptions:
The file includes 1971 and 2011 CMA or CA boundaries, which can be produced using the Census_metropolitan_area_indicator_1971 and Census_metropolitan_area_indicator_2011 variables.
EA polygons that are split between two 2011 CMA boundaries can be identified using the primary and secondary CMA variables.
The census metropolitan area code descriptor identifies if the EA belongs to:
• the largest city within the 1971 boundary
• the remainder of the urbanized core
• the urban fringe
• the rural fringe of a 1971 CMA or CA.
Note: for EAs that do not fall within the 1971 CMA or CA boundaries, the CMA descriptor code is labeled “Outside CMA/CA.”
- Reference system identifier
- http://www.epsg-registry.org / EPSG:3978 /
- Distribution format
-
-
FGDB/GDB
(
10
)
-
SHP
(
10
)
-
ESRI REST
(
10.7.1
)
-
WMS
(
1.3.0
)
-
FGDB/GDB
(
10
)
- OnLine resource
-
1971 Enumeration area polygons (English)
(
HTTPS
)
Dataset;FGDB/GDB;eng
- OnLine resource
-
1971 Enumeration area polygons (French)
(
HTTPS
)
Dataset;FGDB/GDB;fra
- OnLine resource
-
1971 Enumeration area polygons (English)
(
HTTPS
)
Dataset;SHP;eng
- OnLine resource
-
1971 Enumeration area polygons (French)
(
HTTPS
)
Dataset;SHP;fra
- OnLine resource
-
Restoration of the 1971 enumeration area polygons for Canada's largest cities (full publication) (English)
(
HTTPS
)
Supporting Document;HTML;eng
- OnLine resource
-
Restoration of the 1971 enumeration area polygons for Canada's largest cities (full publication) (French)
(
HTTPS
)
Supporting Document;HTML;fra
- OnLine resource
-
Restoration of the 1971 enumeration area polygons for Canada's largest cities, release in the The Daily, Statistics Canada’s official release bulletin (overview) (English)
(
HTTPS
)
Supporting Document;HTML;eng
- OnLine resource
-
Restoration of the 1971 enumeration area polygons for Canada's largest cities, release in the The Daily, Statistics Canada’s official release bulletin (overview) (French)
(
HTTPS
)
Supporting Document;HTML;fra
- OnLine resource
-
2011 Census Dictionary (English)
(
HTTPS
)
Supporting Document;HTML;eng
- OnLine resource
-
2011 Census Dictionary (French)
(
HTTPS
)
Supporting Document;HTML;fra
- OnLine resource
-
2011 Census Dictionary (English)
(
HTTPS
)
Supporting Document;PDF;eng
- OnLine resource
-
2011 Census Dictionary (French)
(
HTTPS
)
Supporting Document;PDF;fra
- OnLine resource
-
2011 Census - Road Network files (SHP/GML/TAB) (English)
(
HTTPS
)
Dataset;SHP;eng
- OnLine resource
-
2011 Census - Road Network files (SHP/GML/TAB) (French)
(
HTTPS
)
Dataset;SHP;fra
- OnLine resource
-
2011 Census – Boundary files for Lakes and rivers (polygons) and Rivers (lines) (SHP/GML/TAB) (English)
(
HTTPS
)
Dataset;SHP;eng
- OnLine resource
-
2011 Census – Boundary files for Lakes and rivers (polygons) and Rivers (lines) (SHP/GML/TAB) (French)
(
HTTPS
)
Dataset;SHP;fra
- OnLine resource
-
1971 Enumeration area polygons
(
ESRI REST: Map Service
)
Web Service;ESRI REST;eng
- OnLine resource
-
1971 Enumeration area polygons
(
ESRI REST: Map Service
)
Web Service;ESRI REST;fra
- OnLine resource
-
1971 Enumeration area polygons
(
OGC:WMS
)
Web Service;WMS;eng
- OnLine resource
-
1971 Enumeration area polygons
(
OGC:WMS
)
Web Service;WMS;fra
- File identifier
- 8e98d369-18bd-47ee-8bfd-e75577eb4119 XML
- Metadata language
- eng; CAN
- Character set
- utf8; utf8 RI_458
- Hierarchy level
- dataset; jeuDonnées RI_622
- Date stamp
- 2021-09-08T20:15:54
- Metadata standard name
- North American Profile of ISO 19115:2003 - Geographic information - Metadata
- Metadata standard version
- CAN/CGSB-171.100-2009
Overviews
Spatial extent
Provided by
