The size of Carrum Downs is approximately 20.2 square kilometres. It has 31 parks covering nearly 2% of total area. The population of Carrum Downs in 2011 was 19,122 people. By 2016 the population was 20,723 showing a population growth of 8.4% in the area during that time. The predominant age group in Carrum Downs is 30-39 years. Households in Carrum Downs are primarily couples with children and are likely to be repaying $1400 - $1799 per month on mortgage repayments. In general, people in Carrum Downs work in a trades occupation. In 2011, 70.5% of the homes in Carrum Downs were owner-occupied compared with 67.9% in 2016. Currently the median sales price of houses in the area is $678,250.