The size of Coolalinga is approximately 1.1 square kilometres. The population of Coolalinga in 2011 was 2,042 people. By 2016 the population was 534 showing a population decline of 73.8% in the area during that time. The predominant age group in Coolalinga is 20-29 years. Households in Coolalinga are primarily childless couples and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Coolalinga work in a trades occupation. In 2011, 79% of the homes in Coolalinga were owner-occupied compared with 26.9% in 2016. Currently the median sales price of houses in the area is $464,000.