The size of Tarban is approximately 104 square kilometres. It has 3 parks covering nearly 6.6% of total area. The population of Tarban in 2011 was 446 people. By 2016 the population was 4 showing a population decline of 99.1% in the area during that time. The predominant age group in Tarban is 60-69 years. Households in Tarban are primarily childless couples and are likely to be repaying under $300 per month on mortgage repayments. In general, people in Tarban work in a labourer occupation. In 2006, 23.3% of the homes in Tarban were owner-occupied compared with 78.8% in 2011.