DemographicsDarlington (Qld) is approximately 52.79 square kilometres. In 2016 the population of Darlington (Qld) was 88. The population is 48% male and 52% female. On average the monthly mortgage repayments in Darlington (Qld) are $1800 to $2399. The most common weekly income bracket is $800 to $999 per week. Weekly rents in the area are on average $0 to $74.