Perth (/ˈpɜːrθ/ (listen) PURTH) is the capital and largest city of the Australian state of Western Australia (WA). It is named after the city of Perth, Scotland and is the fourth-most populous city in Australia, with a population of 2. 06 million living in Greater Perth. Perth is part of the South West Land Division of Western Australia, with the majority of the metropolitan area located on the Swan Coastal Plain, a narrow strip between the Indian Ocean and the Darling Scarp. The first areas settled were on the Swan River at Guildford, with the city's central business district and port (Fremantle) both later founded downriver.