The size of Coulta is approximately 334.7 square kilometres. It has 1 park covering nearly 0.8% of total area. The population of Coulta in 2011 was 457 people. By 2016 the population was 199 showing a population decline of 56.5% in the area during that time. The predominant age group in Coulta is 10-19 years. Households in Coulta are primarily couples with children and are likely to be repaying $800 - $999 per month on mortgage repayments. In general, people in Coulta work in a managers occupation. In 2011, 83.1% of the homes in Coulta were owner-occupied compared with 76.5% in 2016.