The size of Darlington is approximately 0.4 square kilometres. The population of Darlington in 2011 was 2,244 people. By 2016 the population was 3,101 showing a population growth of 38.2% in the area during that time. The predominant age group in Darlington is 20-29 years. Households in Darlington are primarily childless couples and are likely to be repaying over $4000 per month on mortgage repayments. In general, people in Darlington work in a professional occupation. In 2011, 38.3% of the homes in Darlington were owner-occupied compared with 25.2% in 2016. Currently the median sales price of houses in the area is $1,860,000.