The size of Blackburn is approximately 5.9 square kilometres. It has 28 parks covering nearly 9.8% of total area. The population of Blackburn in 2011 was 12,795 people. By 2016 the population was 13,927 showing a population growth of 8.8% in the area during that time. The predominant age group in Blackburn is 40-49 years. Households in Blackburn are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Blackburn work in a professional occupation. In 2011, 76.7% of the homes in Blackburn were owner-occupied compared with 72.3% in 2016. Currently the median sales price of houses in the area is $1,519,000.