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How common is autism? What are the autism statistics in Australia?

The Australian Bureau of Statistics (ABS) reported that there were 205,200 autistic Australians in 2018, which was around 1% of the population.

The precise prevalence of autism internationally is unknown but estimates generally suggest that around 1% and 2% of the world population are autistic. Autism seems to be equally prevalent in all ethnic and cultural groups, though access to autism assessments vary significantly throughout the world.