DemographicsRose Bay (Tas.) is approximately 0.66 square kilometres. In 2016 the population of Rose Bay (Tas.) was 1102. The population is 49% male and 51% female. On average the monthly mortgage repayments in Rose Bay (Tas.) are $1800 to $2399. The most common weekly income bracket is $1000 to $1249 per week. Weekly rents in the area are on average $275 to $349.