http://www.abc.net.au/news/2017-07-12/australia-religion-census-2016-map...
This article provides a detailed breakdown of religious affiliations based on various demographics. It shows that young urban dwellers are most likely to have no religion.
Another interesting trend is the growth of Aboriginal religions. Religious missions played a key role in the colonization/assimilation process in both Australia and New Zealand, so a high percentage of Aborigines/Maori are Anglican or Catholic. But many Aborigines now seem to be turning their backs on the colonial religions.
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