The size of Southampton is approximately 9.7 square kilometres. The population of Southampton in 2011 was 60 people. By 2016 the population was 12 showing a population decline of 80.0% in the area during that time. The predominant age group in Southampton is 50-59 years. Households in Southampton are primarily childless couples and are likely to be repaying $3000 - $3999 per month on mortgage repayments. In general, people in Southampton work in a professional occupation. In 2006, 37.4% of the homes in Southampton were owner-occupied compared with 76.4% in 2011.