DemographicsCaboonbah is approximately 8.3 square kilometres. In 2016 the population of Caboonbah was 14. The population is 30% male and 70% female. On average the monthly mortgage repayments in Caboonbah are $0 to $299. The most common weekly income bracket is $400 to $499 per week. Weekly rents in the area are on average $0 to $74.