1 Census of Canada, 1981 CARTLIB : a digital cartographic library of statistical area boundaries Principal investigator: Statistics Canada ----------------------------------------------------------------------- Codebook by University of Toronto Data Library Service 28/09/95 Based on: CARTLIB : a digital cartographic library of statistical area boundaries : 1981 census divisions./Statistics Canada Ottawa, Ont.: Statistics Canada, n.d. and CARTLIB : a digital cartographic library of statistical area boundaries : 1981 census tracts./Statistics Canada Ottawa, Ont.: Statistics Canada, n.d. ----------------------------------------------------------------------- Table of contents: 1.Introduction 1.1 1981 census division files 1.2 1981 census tract files 2. Record layouts 2.1 Census division file 2.2 Census tracts : index file 2.3 Census tracts : boundary file Appendix 1: Census divisions Appendix 2: CT summary information 1 1. Introduction + ____________ 1.1 1981 census division files + __________________________ One file contains the boundaries of the 266 census divisions -- and additional files contain the boundaries of the provinces/territories, the Great Lakes, and portions of the continental U.S.A. and Alaska. The names and codes of the census divisions are listed in Appendix 1. Each census division and province is delimited by one or more polygons. A zone with more than one continuous part is described by one polygon for each part of "island". In a few cases, census divisions may enclose bodies of water or enclaves (other census divisions). These internal boundaries or "holes" are described by internal polygons. Each zone is described by two header records ("A" and "B"), and a series of data records, one for each vertex. The "A" record contains the zone sequence number and the zone name. The "B" record consists of the zone sequence number, the number of vertices, the area of the zone, and the x-y coordinates of the geographic centroid. The data record corresponding to each vertex includes the zone sequence number, a subzone number, the vertex sequence number, the boundary link, and the x-y coordinates. (The subzone number reflects that a zone description may have "islands" or "holes". Each of these is considered as a separate subzone and numbered accordingly. The boundary link for each vertex is the sequence number of the zone on the other side of the straight line segment joining this vertex to the next vertex.) The last record of the file, the "Z" record, contains the total number of zones, the total number of vertices, the means of the x and y centroid values, the total area, and the total number of subzones. The Great Lakes and the USA are not encoded as polygons, but as lines. These files contain the same information mentioned above, except that zone related data are not generated (for example, area of zones and centroid coordinates of zones). The boundaries were digitized from a Lambert Conic Conformal projection, with standard parallels at 49 and 77 degrees. The coordinates are stored in 100's of metres. The two territories and the USA were digitized at 1:5,000,000; the ten provinces and the Great Lakes were digitized at 1:2,000,000. The 1981 census divisions were updated from the 1976 digital file. Boundary changes between 1976 and 1981 that were not visible or significant at 1:2,000,000 were not modified. The user should therefore be advised against plotting the boundaries at scales larger than 1:2,000,000. The boundaries were prepared by the Geocartographics Subdivision in collaboration with the Geography Division. 1 1.2 1981 census tract files + _______________________ There are 12 census metropolitan areas (CMA's) available for computer mapping (see Appendix 2). The 1981 census tract files consist of two physical files: an index file which contains one record for each census tract (CT), and a boundary file, which may have up to several hundred records for each census tract. The records in the index file can be linked to the corresponding records in the boundary file by the area name. The index file gives various alternative geographic codes and names associated with each area -- as well as the land area in square kilometers, the 1981 population, the 1976 population for the 1981 boundaries, and the geographic centroid (When areas consist of two or more polygons, the centroid is the mean centroid for the entire area. This centroid could therefore lie outside the polygon.) The land areas are the same unofficial measurements given in the census bulletins (see appendix A). In the boundary file, each area's boundary is delimited by one or more polygons. An area with more than one contiguous part is described by one polygon for each part of "island". In a few cases, areas may enclose bodies of water or enclaves (other geographic areas). These internal boundaries or "holes" are described by internal polygons (these internal boundaries pose no problems for mapping programs which draw lines, but may cause unwanted overlaps for programs which draw area shading, depending on the algorithm used.). Each Polygon is defined by a series of x-y coordinate pairs, usually listed in clockwise sequence. The first vertex is repeated at the end to close the polygon. Each record in the boundary file gives the coordinate location of one vertex and is identified by an area name, a polygon number within the area, and the sequence number of the vertex within the polygon. The CTs, which were extracted from the Census Geographic Master File (CGMF), were digitized at 1:50,000. The tracts where then enhanced to include shortlines and major rivers and lakes. These geographic features were digitized at scales ranging from 1:50,000 to 1:300,000. The coordinate system employed for 10 centres is the Universal Transverse Mercator (UTM). The remaining 2 centres (Calgary and Edmonton) were converted from UTM to Lambert Conic Conformal coordinates using a projection transformation program; this was necessary to facilitate computer mapping since these centres are located in two UTM zones. For a correspondence list linking the census tract numbers with other geographic area codes and names, see the Enumeration Area Reference List: census tracts (STC cat. no. 99-913). Similar information in machine-readable form (at the enumeration area level) is contained in the 1981 geography tape file. The Census Geographic Master File was created by the Geography Division. The boundary files were prepared in a format suitable for computer mapping by the Geocartographics Subdivision. The index file was assembled from a variety of sources by the CANSIM Division. Note: These boundaries were developed specifically for mapping. Hence the user should not attempt to perform point-in-polygon retrievals of the centroids on the geography tape file or on user-defined point files and correlate them to the digital boundaries in this CARTLIB. 1 2. Record layouts + ______________ 2.1 Census division file + ____________________ Field Size Position Type Description "A" record + __________ 1 1 1 a blank 2 1 2 a "A" (constant) 3 6 3 - 8 i zone or segment sequence number 4 54 9 - 62 a zone or segment names "B" record + __________ 1 1 1 a blank 2 1 2 a "B" (constant) 3 6 3 - 8 i zone or segment sequence number 4 5 9 - 13 i number of vertices 5 14 18 - 31 i calculated area of zone 6 14 33 - 46 i x coordinate of geographic centroid 7 14 53 - 66 i y coordinate of geographic centroid Note: fields 5, 6, and 7 are present in area files, but not in line files. Vertex record + _____________ 1 2 1 - 2 a blank 2 6 3 - 8 i zone or segment sequence number 3 3 18 - 20 i subzone number 4 5 21 - 25 i sequence number of vertex 5 6 26 - 31 i boundary link 6 14 33 - 46 i x coordinate of vertex 7 14 53 - 66 i y coordinate of vertex Note: fields 3 and 5 are present in area files, but not in line files. "Z" record + __________ 1 1 1 a blank 2 1 2 a "Z" (constant) 3 10 3 - 12 i total number of zones or segments 4 10 13 - 22 i total number of vertices 5 14 23 - 36 i arithmetic mean of geographic centroids - x coordinate 6 14 37 - 50 i arithmetic mean of geographic centroids - y coordinate 7 14 51 - 64 i total area of zones 8 7 65 - 71 i total number of subzones Note: fields 5 to 8 are present in area files, but not in line files. 1 2.2 Census tracts : index file + __________________________ Field Size Position Type Description 1 3 1 - 3 a CMA code 2 6 4 - 9 a census tract number 3 3 10 - 12 a area type: 'CT' 4 4 13 - 16 a census tract code 5 2 17 - 18 i centroid : UTM zone N.B. if equal to '0', Lambert Conical Conformal coordinates are used 6 7 19 - 25 i centroid : X coordinate (easting) 7 7 25 - 32 i centroid : Y coordinate (northing) 8 2 33 - 34 i boundary : number of island polygons 9 2 35 - 36 i boundary : number of enclave polygons 10 2 37 - 38 i boundary : number of lake polygons 11 5 39 - 43 i boundary : number of vertices 12 11 44 - 54 f11.2 land area : square kilometres 13 1 55 - 55 i population flag '1' - 1976 population has been adjusted to reflect boundary changes 14 7 56 - 62 i population : 1976 population for 1981 boundaries 15 7 63 - 69 i population : 1981 population 1 2.3 Census tracts : boundary file + _____________________________ Field Size Position Type Description 1 3 1 - 3 a area name : CMA code 2 6 4 - 9 a area name : census tract number 3 2 10 - 11 i polygon number Note: "holes" have a number greater than 60. 4 5 12 - 16 i vertex sequence number Value '99999' for the last vertex in each polygon. 5 2 17 - 18 i vertex coordinates : UTM zone If equal to '0', Lambert conic conformal coordinates are used. 6 7 19 - 25 i vertex coordinates : X coordinate (easting) 7 7 26 - 32 i vertex coordinates : Y coordinate (northing) 1 Appendix 1: Census divisions + ____________________________ Province Census division Code Name Code Name 10 Newfoundland 01 Division No. 1 02 Division No. 2 03 Division No. 3 04 Division No. 4 05 Division No. 5 06 Division No. 6 07 Division No. 7 08 Division No. 8 09 Division No. 9 10 Division No. 10 11 Prince Edward Island 01 Kings County 02 Prince County 03 Queens County 12 Nova Scotia 05 Annapolis County 14 Antigonish County 17 Cape Breton County 10 Colchester County 11 Cumberland County 03 Digby County 11 Guysborough County 09 Halifax County 08 Hants County 15 Inverness County 07 Kings County 06 Lunenburg County 12 Pictou County 04 Queens County 16 Richmond County 01 Shelburne County 18 Victoria County 02 Yarmouth County 13 New Brunswick 06 Albert County 11 Carleton County 02 Charlotte County 15 Gloucester County 08 Kent County 05 Kings County 13 Madawaska County 09 Northumberland County 04 Queens County 14 Restigouche County 01 Saint John County 03 Sunbury County 12 Victoria County 07 Westmorland County 10 York County 1 24 Quebec 84 Abitibi 74 Argenteuil 34 Arthabaska 40 Bagot 23 Beauce 70 Beauharnois 15 Bellechasse 49 Berthier 04 Bonaventure 38 Brome 56 Chambly 32 Champlain 11 Charlevoix-Est 12 Charlevoix-Ouest 69 Chateauguay 94 Chicoutimi 25 Compton 73 Deux-Montagnes 22 Dorchester 41 Drummond 24 Frontenac 02 Gaspe-Est 03 Gaspe-Ouest 78 Gatineau 79 Hull 68 Huntingdon 53 Iberville 65 Ile-de-Montreal 64 Ile-Jesus 01 Iles-de-la-Madeleine 58 Joliette 10 Kamouraska 62 L'Assomption 13 L'Islet 76 Labelle 93 Lac-Saint-Jean-Est 90 Lac-Saint-Jean-Ouest 66 Laprairie 21 Levis 28 Lotbiniere 47 Maskinonge 06 Matane 05 Matapedia 27 Megantic 54 Missisquoi 61 Montcalm 14 Montmagny 17 Montmorency No. 1 16 Montmorency No. 2 67 Napierville 33 Nicolet 75 Papineau 80 Pontiac 29 Portneuf 20 Quebec 1 50 Richelieu 35 Richmond 07 Rimouski 08 Riviere-du-Loup 52 Rouville 97 Saguenay 51 Saint-Hyacinthe 55 Saint-Jean 43 Saint-Maurice 39 Shefford 36 Sherbrooke 71 Soulanges 37 Stanstead 83 Temiscamingue 09 Temiscouata 63 Terrebonne 98 Territoire-du-Nouveau-Quebec 72 Vaudreuil 57 Vercheres 26 Wolfe 42 Yamaska 35 Ontario 57 Algoma District 29 Brant County 41 Bruce County 56 Cochrane District 22 Dufferin County 05 Dundas County 18 Durham Regional Municipality 34 Elgin County 37 Essex County 10 Frontenac County 01 Glengarry County 07 Grenville County 42 Grey County 28 Haldimand-Norfolk Regional Municipality 46 Haliburton County 24 Halton Regional Municipality 25 Hamilton-Wentworth Regional Municipality 12 Hastings County 40 Huron County 60 Kenora District 36 Kent County 38 Lambton County 09 Lanark County 08 Leeds County 11 Lennox and Addington County 51 Manitoulin District 39 Middlesex County 44 Muskoka District Municipality 26 Niagara Regional Municipality 48 Nipissing District 14 Northumberland County 06 Ottawa-Carleton Regional Municipality 32 Oxford County 1 49 Parry Sound District 21 Peel Regional Municipality 31 Perth County 15 Peterborough County 02 Prescott County 13 Prince Edward County 59 Rainy River County 47 Renfrew County 03 Russell County 43 Simcoe County 04 Stormount County 52 Sudbury District (N.B. contains enclaves) 53 Sudbury Regional Municipality 58 Thunder Bay District 54 Timiskaming District 20 Toronto Metropolitan Municipality 16 Victoria County 30 Waterloo Regional Municipality 23 Wellington County 19 York Regional Municipality 46 Manitoba 01 Division No. 1 02 Division No. 2 03 Division No. 3 04 Division No. 4 05 Division No. 5 06 Division No. 6 07 Division No. 7 08 Division No. 8 09 Division No. 9 10 Division No. 10 11 Division No. 11 12 Division No. 12 13 Division No. 13 14 Division No. 14 15 Division No. 15 16 Division No. 16 17 Division No. 17 18 Division No. 18 19 Division No. 19 20 Division No. 20 21 Division No. 21 22 Division No. 22 23 Division No. 23 1 47 Saskatchewan 01 Division No. 1 02 Division No. 2 03 Division No. 3 04 Division No. 4 05 Division No. 5 06 Division No. 6 07 Division No. 7 08 Division No. 8 09 Division No. 9 10 Division No. 10 11 Division No. 11 12 Division No. 12 13 Division No. 13 14 Division No. 14 15 Division No. 15 16 Division No. 16 17 Division No. 17 18 Division No. 18 48 Alberta 01 Division No. 1 02 Division No. 2 03 Division No. 3 04 Division No. 4 05 Division No. 5 06 Division No. 6 07 Division No. 7 08 Division No. 8 09 Division No. 9 10 Division No. 10 11 Division No. 11 12 Division No. 12 13 Division No. 13 14 Division No. 14 15 Division No. 15 59 British Columbia 23 Alberni-Clayoquot Regional District 51 Bulkley-Nechako Regional District 17 Capital Regional District 41 Cariboo Regional District 45 Central Coast Regional District 11 Central Fraser Valley Regional District 03 Central Kootenay Regional District 35 Central Okanagan Regional District 39 Columbia-Shuswap Regional District 25 Comox-Strathcona Regional District 19 Cowichan Valley Regional District 13 Dewdney-Alouette Regional District 01 East Kootenay Regional District 09 Fraser-Cheam Regional District 53 Fraser-Fort George Regional District 15 Greater Vancouver Regional District 49 Kitimat-Stikine Regional District 05 Kootenay Boundary Regional District 43 Mount Waddington Regional District 21 Nanaimo Regional District 1 37 North Okanagan Regional District 07 Okanagan-Similkameen Regional District 55 Peace River-Liard Regional District 27 Powell River Regional District 47 Skeena-Queen Charlotte Regional District 31 Squamish-Lillooet Regional District 57 Stikine Region 29 Sunshine Coast Regional District 33 Thompson-Nicola Regional District 60 Yukon 01 Yukon 61 Northwest Territories 04 Baffin Region 08 Central Arctic Region 06 Fort Smith Region 07 Inuvik Region 05 Keewatin Region 1 Appendix 2: CT summary information + __________________________________ Centre CMA code UTM zone CT census bulletin St. John's 001 22 95-927 Halifax 205 20 95-910 Quebec 421 19 95-924 Montreal * 462 18 95-918 Ottawa-Hull * 505 18 95-921 Toronto * 535 17 95-936 Hamilton 537 17 95-911 Winnipeg 602 14 95-940 Regina * 705 13 95-925 Calgary 825 00 95-906 Edmonton * 835 00 95-908 Vancouver 933 10 95-937 * Centres containing census tracts within census tracts (enclaves).