australia is made up of how many states and territories
States and territories of Australia Australia (officially known as the Commonwealth of Australia) is a federation of six states, together with ten federal territories. The Australian mainland consists of five of the six federated states and three of the federal territories (the "internal" territories). The state of Tasmania is an island about 200 kilometres (120Â mi) south of the mainland. The remaining seven territories are classified for some purposes as "external" territories. Aside from the Australian Antarctic Territory, which is Australia's claim to part of Antarctica, Australia is the world's sixth-largest country by total area.