The size of Millner is approximately 1.5 square kilometres. It has 8 parks covering nearly 8% of total area. The population of Millner in 2011 was 2,465 people. By 2016 the population was 2,559 showing a population growth of 3.8% in the area during that time. The predominant age group in Millner is 30-39 years. Households in Millner are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Millner work in a professional occupation. In 2011, 55.2% of the homes in Millner were owner-occupied compared with 50.1% in 2016. Currently the median sales price of houses in the area is $550,000.