Australian Standard Geographical Classification
The census is collected and published against geographic areas defined by the Australian Standard Geographical Classification. The ASGC provides a set of geographic classifications (called structures) for the dissemination of all ABS statistics. In 2007 the ABS published an experimental set of spatial units called mesh blocks. The primary aim of mesh blocks is to provide a building block for constructing alternative and more relevant geographies. Only data on total persons and total dwellings is released at the mesh block level. Mesh blocks will form the basis of a new statistical geography, the Australian Statistical Geography Standard (ASGS).
The main structure of the ASGC includes the following geographic areas:
- Collection District (CD)
- Statistical Local Area (SLA)
- Statistical Subdivision (SSD)
- Statistical Division (SD)
- State/Territory (S/T)
- Australia
ASGC Structures include:
- Local government area
- Statistical district
- Main
- Statistical region
- Section of State
- Remoteness
- Urban centre and locality
The main structure of the ASGS includes the following units:
- Statistical Area Level 1 (SA1)
- Statistical Area Level 2 (SA2)
- Statistical Area Level 3 (SA3)
- Statistical Area Level 4 (SA4)
- State/Territory (S/T)
- Australia
ASGS ABS Structures include:
- Capital Cities
- Significant Urban Areas
- Main
- Remoteness
- Urban Centre and Locality
The traditional concept of a Collection District is that it was the area that one census collector can cover (delivering and collecting census forms) in about a ten-day period. In the 2001 census, collectors may be allocated more than one urban collection district because of their size. In urban areas collection districts average about 220 dwellings. In rural areas the number of dwellings per collection district reduces as population densities decrease.
For the 2001 census there were 37,209 collection districts and 1,353 Statistical Local Areas defined throughout Australia.
Read more about this topic: Census In Australia
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