Down Syndrome Statistics in Australia
This page presents a range of the latest statistics relevant to Down syndrome in Australia.
Down syndrome is the most common genetic cause of intellectual disability, accounting for approximately 15% of people with intellectual disability in Australia.
It is estimated that approximately 1 in every 1100 babies born in Australia will have Down syndrome. This means that each year there are approximately 290 new babies born each year who have Down syndrome.
There is no national data collection on the number of people with Down syndrome in Australia.
The best estimate available is that there are between 13,000-15,000 individuals with Down syndrome in Australia as of 2019. This estimate is based on Western Australia data and applying these numbers to the Australian population.
These population figures mean that for every 10,000 people there are 5.14 people with Down syndrome. This is similar to other countries like the UK.
People with Down syndrome are living longer and healthier lives than they have in the past. Life expectancy of people with Down syndrome has dramatically increased over the past 50 years, with the average life expectancy of a person with Down syndrome in Australia being 60 years of age.