The size of Leighton is approximately 101 square kilometres. The population of Leighton in 2011 was 1,396 people. By 2016 the population was 33 showing a population decline of 97.6% in the area during that time. The predominant age group in Leighton is 40-49 years. Households in Leighton are primarily couples with children and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Leighton work in a professional occupation. In 2011, 69.8% of the homes in Leighton were owner-occupied compared with 111.1% in 2016.