Yarloop is a town in the South West of Western Australia along the South Western Highway, between Waroona and Harvey. At the 2016 censu…Yarloop is a town in the South West of Western Australia along the South Western Highway, between Waroona and Harvey. At the 2016 census, Yarloop had a population of 395. On 7 January 2016 a bushfire destroyed most of the town.