DemographicsRockmount is approximately 33.27 square kilometres. In 2016 the population of Rockmount was 87. The population is 52% male and 48% female. On average the monthly mortgage repayments in Rockmount are $1000 to $1399. The most common weekly income bracket is $0 to $149 per week. Weekly rents in the area are on average $275 to $349.