Australian Census Longitudinal Dataset...

The Australian Census Longitudinal Dataset (ACLD) is Australia's largest longitudinal dataset bringing together a 5% random sample of around one million records from the 2006 Census with corresponding records from the 2011 Census. Unit of measure: Count of persons in scope of both the 2006 and 2011 Censuses. Geographic coverage: Australia/State/SA4/SA3/SA2. Catalogue number: 2080.5

Source

This data file or API can be downloaded from:

https://explore.data.abs.gov.au/vis?tm=ABS_ACLD_LFSTATUS&pg=0&hc[dataflowId]=ABS_ACLD_LFSTATUS&df[ds]=LABOUR_TOPICS&df[id]=ABS_ACLD_LFSTATUS&df[ag]=ABS&df[vs]=