Myalup is a town located on the coast in the South West region of Western Australia between Mandurah and Bunbury. At the 2006 census, Myalup had a population of 144. The name Myalup is a local Aboriginal name for a nearby swamp. Prior to European settlement, the Noongar Ganeang people wandered around the eastern shores of Lake Josephine, eas…Myalup is a town located on the coast in the South West region of Western Australia between Mandurah and Bunbury. At the 2006 census, Myalup had a population of 144. The name Myalup is a local Aboriginal name for a nearby swamp. Prior to European settlement, the Noongar Ganeang people wandered around the eastern shores of Lake Josephine, east of the town.