The size of Douglas is approximately 8.8 square kilometres. It has 7 parks covering nearly 6.5% of total area. The population of Douglas in 2011 was 7,184 people. By 2016 the population was 7,746 showing a population growth of 7.8% in the area during that time. The predominant age group in Douglas is 20-29 years. Households in Douglas are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Douglas work in a professional occupation. In 2011, 46.3% of the homes in Douglas were owner-occupied compared with 45.3% in 2016. Currently the median sales price of houses in the area is $409,000.