The size of Sandleton is approximately 69.1 square kilometres. The population of Sandleton in 2011 was 637 people. By 2016 the population was 10 showing a population decline of 98.4% in the area during that time. The predominant age group in Sandleton is 60-69 years. Households in Sandleton are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Sandleton work in a labourer occupation. In 2011, 83.8% of the homes in Sandleton were owner-occupied compared with 71.5% in 2016.