The size of Tungkillo is approximately 129.9 square kilometres. The population of Tungkillo in 2011 was 598 people. By 2016 the population was 289 showing a population decline of 51.7% in the area during that time. The predominant age group in Tungkillo is 50-59 years. Households in Tungkillo are primarily couples with children and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Tungkillo work in a managers occupation. In 2011, 79.1% of the homes in Tungkillo were owner-occupied compared with 89.3% in 2016. Currently the median sales price of houses in the area is $449,750.