DemographicsSutton Grange is approximately 68.7 square kilometres. In 2016 the population of Sutton Grange was 132. The population is 53% male and 47% female. On average the monthly mortgage repayments in Sutton Grange are $1400 to $1799. The most common weekly income bracket is $300 to $399 per week. Weekly rents in the area are on average $0 to $74.