DemographicsMerryvale is approximately 9.76 square kilometres. In 2016 the population of Merryvale was 22. The population is 52% male and 48% female. On average the monthly mortgage repayments in Merryvale are $0 to $299. The most common weekly income bracket is $0 to $149 per week. Weekly rents in the area are on average $0 to $74.