The size of Gollan is approximately 249.5 square kilometres. It has 1 park. The population of Gollan in 2011 was 229 people. By 2016 the population was 130 showing a population decline of 43.2% in the area during that time. The predominant age group in Gollan is 60-69 years. Households in Gollan are primarily childless couples and are likely to be repaying over $4000 per month on mortgage repayments. In general, people in Gollan work in a managers occupation. In 2011, 80.6% of the homes in Gollan were owner-occupied compared with 88.6% in 2016.