DemographicsCrabtree is approximately 28.67 square kilometres. In 2016 the population of Crabtree was 292. The population is 48% male and 52% female. On average the monthly mortgage repayments in Crabtree are $1400 to $1799. The most common weekly income bracket is $150 to $299 per week. Weekly rents in the area are on average $225 to $275.