The size of Tantanoola is approximately 260.5 square kilometres. It has 13 parks covering nearly 1.2% of total area. The population of Tantanoola in 2011 was 523 people. By 2016 the population was 502 showing a population decline of 4.0% in the area during that time. The predominant age group in Tantanoola is 50-59 years. Households in Tantanoola are primarily childless couples and are likely to be repaying $600 - $799 per month on mortgage repayments. In general, people in Tantanoola work in a managers occupation. In 2011, 86.4% of the homes in Tantanoola were owner-occupied compared with 87.7% in 2016. Currently the median sales price of houses in the area is $141,000.