DemographicsYambacoona is approximately 107.81 square kilometres. In 2016 the population of Yambacoona was 32. The population is 61% male and 39% female. On average the monthly mortgage repayments in Yambacoona are $0 to $299. The most common weekly income bracket is $650 to $799 per week. Weekly rents in the area are on average $0 to $74.