South Australia is a state in the southern central part of Australia. It covers some of the most arid parts of the continent. With a total land area of 983,482 square kilometres (379,725 sq mi), it is the fourth-largest of Australia’s states and territories. It has a total of 1.7 million people, and its population is the most highly centralised of any state in Australia, with more than 75 percent of South Australians living in the capital, Adelaide, or its environs. Other population centres in the state are relatively small. (Source: Wikipedia)