DemographicsHanging Rock is approximately 313.09 square kilometres. In 2016 the population of Hanging Rock was 105. The population is 46% male and 54% female. On average the monthly mortgage repayments in Hanging Rock are $600 to $799. The most common weekly income bracket is $300 to $399 per week. Weekly rents in the area are on average $0 to $74.