DemographicsHillwood is approximately 31.07 square kilometres. In 2016 the population of Hillwood was 578. The population is 49% male and 51% female. On average the monthly mortgage repayments in Hillwood are $1400 to $1799. The most common weekly income bracket is $300 to $399 per week. Weekly rents in the area are on average $200 to $224.