DemographicsPentland Hills is approximately 24.45 square kilometres. In 2016 the population of Pentland Hills was 185. The population is 52% male and 48% female. On average the monthly mortgage repayments in Pentland Hills are $1800 to $2399. The most common weekly income bracket is $650 to $799 per week. Weekly rents in the area are on average $350 to $449.