DemographicsMulla Creek is approximately 164.46 square kilometres. In 2016 the population of Mulla Creek was 90. The population is 54% male and 46% female. On average the monthly mortgage repayments in Mulla Creek are $1000 to $1399. The most common weekly income bracket is $500 to $649 per week. Weekly rents in the area are on average $0 to $74.