The size of Ainslie is approximately 3.5 square kilometres. It has 22 parks covering nearly 27.7% of total area. The population of Ainslie in 2011 was 5,104 people. By 2016 the population was 5,190 showing a population growth of 1.7% in the area during that time. The predominant age group in Ainslie is 40-49 years. Households in Ainslie are primarily couples with children and are likely to be repaying $3000 - $3999 per month on mortgage repayments. In general, people in Ainslie work in a professional occupation. In 2011, 57.5% of the homes in Ainslie were owner-occupied compared with 57.7% in 2016. Currently the median sales price of houses in the area is $1,455,000.