The size of Sexton is approximately 61.4 square kilometres. The population of Sexton in 2011 was 498 people. By 2016 the population was 170 showing a population decline of 65.9% in the area during that time. The predominant age group in Sexton is 40-49 years. Households in Sexton are primarily couples with children and are likely to be repaying under $300 per month on mortgage repayments. In general, people in Sexton work in a managers occupation. In 2011, 77.7% of the homes in Sexton were owner-occupied compared with 82.5% in 2016.