DemographicsBarrabool is approximately 29.79 square kilometres. In 2016 the population of Barrabool was 235. The population is 49% male and 51% female. On average the monthly mortgage repayments in Barrabool are $1000 to $1399. The most common weekly income bracket is $3000+ per week. Weekly rents in the area are on average $275 to $349.