DemographicsMount Thorley is approximately 70.15 square kilometres. In 2016 the population of Mount Thorley was 68. The population is 57% male and 43% female. On average the monthly mortgage repayments in Mount Thorley are $0 to $299. The most common weekly income bracket is $0 to $149 per week. Weekly rents in the area are on average $0 to $74.