2011 Census Geographic Structure ACCOLEDS 2013 MacEwan University - - PDF document

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2011 Census Geographic Structure

ACCOLEDS 2013 MacEwan University

• Nov. 26 - 28

Daniel Beaulieu, Université de Saint-Boniface

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Overview: hierarchy and concepts

• Part 1: Administrative areas (units)
• Part 2: Statistical areas (units)

Geosuite

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Hierarchy - Standard Geographic Units

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Module 1 – Administrative Areas

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Administrative areas (7)

• Defined by federal, provincial or territorial statutes
• Adopted for the purposes of the census
• Some exceptions

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1.1 Provinces / Territories

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Module 1 – Administrative Areas 1.2 Census Divisions

• Census divisions (CDs):
• provincially legislated areas (county, municipalité régionale de comté and

regional district) or their equivalents

• No legislation in MB, SK or AB to create CDs. SC creates CDs

in cooperation with these provinces

• Intermediate geographic areas between province level and the municipality
• CD code
• two-digit code based on the Standard Geographical Classification (SGC).
• always preceded by the two-digit province/territory (PR) code:
• How many CDs in Quebec?

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Module 1 – Administrative Areas 1.2 Census Divisions (cont’d)

• Where can I find changes to CDs ?
• Where can I find a list of CD types?
• Map of CDs

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Module 1 – Administrative Areas 1.3 Census subdivision CSD

• Census subdivision (CSD):
• municipalities as determined by provincial/territorial legislation
• areas treated as municipal equivalents for statistical purposes (e.g. Indian

reserves, Indian settlements and unorganized territories)

• 54 types of CSDs; usually indicated after the CSD name
• CSD code:
• three-digit code based on the Standard Geographical Classification
• always preceded by the two-digit PR code and the two-digit CD.

5 Module 1 – Administrative Areas 1.4 Federal electoral district (FED)

• Federal electoral district (FED):
• area represented by a member of the House of Commons
• boundaries based on the 2003 Representation Order (308 FEDs)
• FED code:
• three-digit code preceded by the two-digit PR code.
• Map

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Module 1 – Administrative Areas 1.5 Designated Place (DPL)

• DPL:
• a small community or settlement that does not meet the CSD or population centre criteria
• created by SC in cooperation with provinces and territories
• Criteria: area <= 10 sq km; pop. > 1,000 & pop. density < 400 per sq km
• Provide data for submunicipal areas
• DPL code:
• a four-digit code preceded by the two-digit PR code.

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6 1.5 Designated Place DPL cont’d

• Types of DPL
• Changes to DPL
• Number of DPL

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Module 1 – Administrative Areas 1.6 Postal Code (PC) & Forward Sortation Area (FSA)

• PC:
• six-character code for the purpose of sorting and delivering mail
• defined and maintained by Canada Post Corp.
• collected from the census questionnaire
• not necessarily a match of the boundaries of standard geographic areas; one PC

could sit on two or more CSD

• FSA:
• identified by the first 3 characters of the postal code
• associated with a postal facility

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Module 2 – Statistical Areas

• defined by Statistics Canada, in cooperation with provinces and territories for

the purpose of disseminating census data

• Some areas complement the structure of administrative regions (ER, CAR &

CCS)

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Module 2 – Statistical Areas 2.1 Economic Regions (ER)

Economic region (ER):

• a grouping of complete census divisions (CDs) - one exception in Ontario
• created for analysis of regional economic activity
• created by agreement between SC and provinces (Quebec’s ERs designated

by law; called “régions administratives” ER code:

• A two-digit code preceded by the two-digit PR code:
• changes to ERs
• maps of ERs

2.2 Census agricultural region (CAR)

Census agricultural region:

• groups of adjacent census divisions
• In SK, groups of adjacent census consolidated subdivisions
• Prairie provinces CARs are commonly referred to as crop districts

CAR code

• a two-digit code precede by the PR code

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9 2.3 Census consolidated subdivisions (CCS)

CCS

• group of adjacent CSDs
• created for disseminating census
• f agriculture data.
• In SK, CCS are the building blocks

for CARs;

CCS code

• 7 digit SGC code of one of its

component CSDs with the largest land area.

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2.4 Population centre (POPCTR) & Rural area

POPCTR

• In 2011, POPCTR replaces the term 'urban area' (UA)
• area with a pop. of at least 1,000 and no fewer than 400 per sq. km
• classified into three groups
• small POPCTR: population between 1,000 and 29,999
• medium POPCTR: population between 30,000 and 99,999
• large urban POPCTR: population of 100,000 or more

Rural area

• All areas outside POPCTRs are classified as rural areas

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10 2.4 Population centre (POPCTR) and Rural area

POPCTR code

• four-digit codes assigned sequentially; preceded by the PR code.

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Module 2 – Statistical Areas

2.5 Census Metropolitan area (CMA) & Census Agglomeration (CA)

CMA

• Consist of one or more adjacent CSDs
• centered on a population centre (known as the core)
• Core area has a minimum population of 50,000
• CMA minimun population of 100,000
• Adjacent CSDs must have a high degree of integration with the core
• All subdivided into Census tracts (CTs)
• CMA status remains even if
• population of core declines under 50k
• population of CMA declines under 100k

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Module 2 – Statistical Areas 2.5 CMA & CA cont’d Census agglomeration (CA)

• must have a core population of at least 10,000
• Adjacent CSDs must have a high degree of integration with the core

CA looses its status or is retired

• If population of core declines under 10,000

CA gains Census tracts

• If population of core increases over 50,000
• CTs remains even if population of core decreases

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Module 2 – Statistical Areas 2.5 CMA & CA cont’d

• CMA / Ca code
• unique three-digit code
• First digit corresponds to the second digit of the province code

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Module 2 – Statistical Areas 2.5 CMA & CA cont’d CMA/CA changes for 2011 Census

• Where can I find changes (names and new CA)

CMA/CA number

CMA/CA MAPS

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2.6 Census Tracts (CTs)

CTs

• are located in CMAs & CAs that have a

core population >= 50,000

• All 33 CMA are divided in CTs
• 15 out of 144 CAs divided in CTs
• Most important geographic areas needed for

urban, health, social, education and market planning & research

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2.6 Census Tracts (CTs) cont’d

CTs delineating rules:

• Permanent, easily recognizable physical features
• Population between 2,500 and 8,000 (average of 4,000)
• Homogeneous in terms of socioeconomic characteristics
• similar economic status and social living conditions
• Shape should be as compact as possible
• Respect CMA, CA & PR boundaries but do not necessarily

respect CSDs boundaries.

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2.6 Census Tracts (CTs) cont’d

CTs naming & coding

• Each CT has a seven-character numeric 'name'
• (including leading zeros, the decimal point and trailing zeros).
• To identify each CT in its CMA or amongst the 15 CAs, the three-digit

CMA/CA code must precede the CT 'name'. For example:

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2.6 Census Tracts (CTs) cont’d

CT splits

• When a CT is split into two or more parts due to a population increase, the number after

the decimal point identifies the splits.

• CT 0042.00 becomes CT 0042.01 and CT 0042.02
• Census Tract Reference Maps, by Census Metropolitan Areas or Census Agglomerations

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2.7 Dissemination block (DB)

• area bounded on all sides by roads

and/or boundaries of standard geographic areas

• Only population and dwelling counts

are disseminated

• DBs with pop. < 15 are adjusted

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15 2.7 Dissemination block (DB) contd

DB coding Each DB is assigned a two-digit code preceded by the two-digit province/territory (PR) code, the two-digit census division (CD) code and the four-digit dissemination area (DA). For example:

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DA

• small, relatively stable geographic unit
• composed of one or more adjacent

dissemination blocks (DBs)

• smallest standard geographic area for which

all census data are disseminated

• Population size 400 to 700 persons

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2.8 Dissemination Area (DA)

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2.8 Dissemination Area (DA) contd

DA boundaries

• respect the boundaries of CSDs & CTs
• follow roads mostly; may follow railways, water features,

power transmission lines DA coding

• A four-digit code preceded by the two-digit (PR) code

and the two-digit (CD) code.

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2.8 Dissemination Area (DA) cont’d

Changes

• In 2001
• DA replaced the enumeration area (EA)
• All EAs (in CMAs and CAs with CTs) were adjusted to created DAs
• In rural areas, DAs = EAs
• In 2006
• DAs were delineated outside CTs (rural areas)
• Some changes in DAs occured with boundary changes in CMAs /

CAs / CTs

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Statistical area classification (SAC)

Purpose

• Groups all CSDs as components of a CMA, a CA or

a Census Metropolitan Influenced Zone (MIZ)

Statistical area classification (SAC)

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Standard Geographical Classification (SGC) 2011

The SGC 2011

• SC’s main classification of geographic areas in Canada.
• Designed to classify statistical information by geographic areas.
• Consists of four levels: Canada’s regions, PR, CDs, CSDs, hierarchically related
• Updated yearly
• Seven-digit code shows this relationship.
• The SGC has 3 variants

Major changes to SGC

• Variant 1: Statistical Area Classification - Variant of SGC 2011

groups all CSDs as part of CMAs, CAs or MIZ

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Major changes to SGC

Variant 2: Statistical Area Classification by Province and Territory

• based on the variant 1 with two additional levels :

Geographical regions of Canada Provinces and territories

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Major changes to SGC

Variant 3: Economic Regions - Variant of SGC 2011

• grouping of complete CDs (with one exception in Ontario)
• created for analysis of regional economic activity.
• small enough for regional analysis
• large enough to release a broad range of statistics after data are screened for confidentiality

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20 Module 2 – Administrative Areas 2.?? Dissolved CSD

• 'Census subdivision – previous census'

refers to the census subdivisions as of January 1, 2006, the geographic reference date for the 2006 Census.

• A 'best fit' linkage is established

between dissemination blocks for the 2011 Census and census subdivisions (municipalities) for the 2006 Census.

• This linkage ensures that data from the

current census can be tabulated for the census subdivisions from the previous census.

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Geographic reference date

• The geographic reference date is a date determined by Statistics Canada for the

purpose of finalizing the geographic framework for which census data will be collected, tabulated and reported. For the 2011 Census, the geographic reference date is January 1, 2011

• When comparing data from consecutive census, always keep in mind that the

geographical areas might have changed.

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GéoSuite 2011

• tool used for data retrieval,

query and tabular output.

• allows users to explore the

links between all standard levels of geography and to identify geographic codes, names, unique identifiers, and, where applicable, types, as well as land area and population and dwelling counts.