DemographicsTurners Marsh is approximately 53.6 square kilometres. In 2016 the population of Turners Marsh was 254. The population is 53% male and 47% female. On average the monthly mortgage repayments in Turners Marsh are $1000 to $1399. The most common weekly income bracket is $1000 to $1249 per week. Weekly rents in the area are on average $200 to $224.