This fact sheet provides the latest available national data on new cases of insulin-treated diabetes in Australia. It shows that in 2015 there were 28,775 people who began using insulin to treat their diabetes in Australia—63% had type 2 diabetes, 26% had gestational diabetes, 9% had type 1 diabetes and 2% had other forms of diabetes or their diabetes status was unknown. The fact sheet is accompanied by a dynamic data display, which provides data on insulin-treated diabetes by age at first insulin use, Indigenous status, remoteness, SEIFA and state/territory.