The size of Ashtonfield is approximately 6.8 square kilometres. It has 6 parks covering nearly 4.5% of total area. The population of Ashtonfield in 2011 was 4,382 people. By 2016 the population was 4,653 showing a population growth of 6.2% in the area during that time. The predominant age group in Ashtonfield is 10-19 years. Households in Ashtonfield are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Ashtonfield work in a professional occupation. In 2011, 77.4% of the homes in Ashtonfield were owner-occupied compared with 75.6% in 2016. Currently the median sales price of houses in the area is $744,000.