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Part A - Short definition:
One side of a street between two consecutive intersections, such as one side of a city block.
Part B - Detailed definition:
A block-face is one side of a street between two consecutive features intersecting that street. The features can be other streets or boundaries of standard geographic areas.
Block-faces are used for generating block-face representative points, which in turn are used for geocoding and census data extraction when the street and address information are available.
2011, 2006, 2001, 1996, 1991, 1986, 1981, 1976, 1971
Population and dwelling counts are not disseminated for individual block-faces, since there are confidentiality concerns about releasing small population and dwelling counts at this level of geography.
Table 1 in the Introduction shows the number of block-faces by province and territory.
Changes prior to the current census:
Major changes in 2001:
- Block-faces were defined for the entire country, rather than only in urban centres covered by the former street network files.
- Block-faces were formed by addressable and non-addressable streets, rather than by addressable streets only.
- Two block-faces were generated opposite a road T-junction, rather than just one block-face.
- Block-faces were not formed when physical features (such as rivers or railroads) intersected the road unless these features were coincident with a boundary of a standard geographic area.
- Block-faces were not formed when a single-address enumeration area (EA) was smaller than a city block. In these cases, the EA was offset from the street, rather than digitally represented as a polygon intersecting the street.
- Block-faces were formed when streets crossed the limits of map tiles (the map tiles, which were based on the National Topographic System of Natural Resources Canada, formed the Canada-wide coverage in the 2001 National Geographic Base).
- Population and dwelling counts were not disseminated for individual block-faces.
Prior to 2001:
- Block-faces were defined only in urban centres covered by street network files.
- Block-faces were formed by addressable streets only.
- Only one block-face was generated opposite a road T-junction.
- Block-faces were formed when physical features intersected roads even when the boundaries of standard geographic areas were not coincident with these features.
- Block-faces were formed when a single-address EA was smaller than a city block since the EA was digitally represented as a polygon intersecting the street.
- Block-faces were not formed when streets crossed the limits of map tiles, since map tiles were not used.
- Population and dwelling counts were disseminated for individual block-faces.
Prior to 1991, block-faces were not created when EA boundaries split city blocks.
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