The states and mainland territories of the Commonwealth of Australia combine to make up the world's sixth-largest country by total area. Australia comprises six states and various territories; the Australian mainland is made up of five states and three territories (including small, somewhat anomalous Jervis Bay), with the sixth island state of Tasmania to the south of the mainland. In addition, there are six island territories, known as external territories, and Australian Antarctic Territory.
All states and two of the three internal territories have their own parliaments and administer themselves; all remaining territories are administered by the federal government, but with Norfolk Island having some degree of self-government.