As I stated in 2016 .................No Religion is making huge inroads in Australia
2021 Australian census results

The 2021 census has revealed a growing nation — more than 25 million people.
It also depicts a country undergoing significant cultural changes.
For the first time, fewer than half of Australians identified as Christian, though Christianity remained the nation's most common religion (declared by 43.9 per cent of the population).
Meanwhile, the number of Australians who said they had no religion rose to 38.9 per cent (from 30.1 per cent in 2016).

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and on Ethnicity
The census also asked Australians to report their "ancestry", as opposed to their country of birth or ethnicity.
The top responses were English (33 per cent), Australian (29.9 per cent), Irish (9.5 per cent) or Scottish (8.6 per cent), with another 5.5 per cent saying Chinese.