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The smallest geographical unit of the ASGS for which full 2011 Census statistics will be published will be the Statistical Area Level 1 (SA1). The SA1 will be composed of aggregates of Mesh Blocks (MB) and will be of slightly smaller average size than a 2006 Collection District (CD). SA1s will aggregate to form the higher level units in the main structure of the ASGS.
Data for Mesh Blocks will be published with Usual Resident population and total dwelling counts, as they were for the 2006 Census. Statistics based on user defined aggregations of Mesh Blocks will not be available.
The ASGS, with improved geographical resolution, will provide statistics of comparable or better quality for most non-ABS geographies that were previously derived from whole CDs. These will include Local Government Areas (LGAs), suburbs, postal areas and Commonwealth and State electoral divisions. The ASGS will also offer users a more stable and consistent output geography that is based on land use and population ranges to optimise output. Whereas the old CD-based geography was designed for ease of collection of census forms.
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