DemographicsStewarts Brook is approximately 122.6 square kilometres. In 2016 the population of Stewarts Brook was 38. The population is 51% male and 49% female. On average the monthly mortgage repayments in Stewarts Brook are $0 to $299. The most common weekly income bracket is $150 to $299 per week. Weekly rents in the area are on average $0 to $74.