DemographicsMurdunna is approximately 96.69 square kilometres. In 2016 the population of Murdunna was 309. The population is 53% male and 47% female. On average the monthly mortgage repayments in Murdunna are $600 to $799. The most common weekly income bracket is $300 to $399 per week. Weekly rents in the area are on average $225 to $275.