The size of Collingullie is approximately 147.3 square kilometres. It has 1 park covering nearly 9.1% of total area. The population of Collingullie in 2011 was 275 people. By 2016 the population was 213 showing a population decline of 22.5% in the area during that time. The predominant age group in Collingullie is 40-49 years. Households in Collingullie are primarily couples with children and are likely to be repaying $1400 - $1799 per month on mortgage repayments. In general, people in Collingullie work in a managers occupation. In 2011, 79% of the homes in Collingullie were owner-occupied compared with 83.4% in 2016. Currently the median sales price of houses in the area is $152,000.