DemographicsSouth Purrumbete is approximately 41.27 square kilometres. In 2016 the population of South Purrumbete was 109. The population is 52% male and 48% female. On average the monthly mortgage repayments in South Purrumbete are $4000+. The most common weekly income bracket is $300 to $399 per week. Weekly rents in the area are on average $0 to $74.