DemographicsRunnymede (Tas.) is approximately 91.48 square kilometres. In 2016 the population of Runnymede (Tas.) was 71. The population is 52% male and 48% female. On average the monthly mortgage repayments in Runnymede (Tas.) are $450 to $599. The most common weekly income bracket is $650 to $799 per week. Weekly rents in the area are on average $0 to $74.