DemographicsKillcare Heights is approximately 2.15 square kilometres. In 2016 the population of Killcare Heights was 745. The population is 50% male and 50% female. On average the monthly mortgage repayments in Killcare Heights are $1800 to $2399. The most common weekly income bracket is $1000 to $1249 per week. Weekly rents in the area are on average $450 to $549.