The Australian Bureau of Statistics (ABS) has just released the 2011 Census data under a CC BY licence.They have also made available data analysis tools such as QuickStats which lets users view a quick summary about certain areas.
Of course, under the CC BY licence, members of the public can create their own data analysis tools to interogate the Census data, and it will be interesting to see if new tools emerge.
Census data from 1996 to 2006 and more analytical tools by the ABS are accessible here.
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