DemographicsBroadwater (Qld) is approximately 34.81 square kilometres. In 2016 the population of Broadwater (Qld) was 292. The population is 49% male and 51% female. On average the monthly mortgage repayments in Broadwater (Qld) are $1000 to $1399. The most common weekly income bracket is $150 to $299 per week. Weekly rents in the area are on average $225 to $275.