The size of Mill Park is approximately 12.8 square kilometres. It has 26 parks covering nearly 8.1% of total area. The population of Mill Park in 2011 was 30,517 people. By 2016 the population was 29,732 showing a population decline of 2.6% in the area during that time. The predominant age group in Mill Park is 50-59 years. Households in Mill Park are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Mill Park work in a professional occupation. In 2011, 79.2% of the homes in Mill Park were owner-occupied compared with 76.3% in 2016. Currently the median sales price of houses in the area is $760,000.