Autism Aspergers Advocacy Australia (A4) published its report updating its views on the number of Autistic Australians who are officially identified as autistic. The numbers are substantially higher than some "authorities" claim. For example,

• the Australian Bureau of Statistics estimated in 2018 that over 3% of Australian children were autistic.
• at June 2023 4.27% of Australian children aged 7 to 14 years were autistic NDIS participants which means they has provided formal evidence of a diagnosis to a government agency. But not all autistic children apply to be NDIS participants so the number of autistic children is higher.

Despite this strong evidence of a lower bound for autism diagnosis rates in Australian children well over 3%, some people suggest that just 1-2% of Australian children are autistic. 

The report discusses the difference between diagnosis rates and prevalence estimates.

A4 shared this report with many relevant federal politicians - especially the Ministers for Social Services, NDIS and Health.