According to the 2006 Census, the median age of the Australian resident population was 37 years, up from 35 years in the 2001 Census. The first figures are now available with more reports on specific topics due out over the coming months.According to the 2006 Census, the median age of the Australian resident population was 37 years, up from 35 years in the 2001 Census. For the 2006 census the ABS is offering an improved online product range, offering you greater flexibility in obtaining the data to meet your statistical needs. You are able to view the information you want as either tables, thematic maps, or graphs.