The size of Longwood is approximately 2.8 square kilometres. The population of Longwood in 2011 was 308 people. By 2016 the population was 261 showing a population decline of 15.3% in the area during that time. The predominant age group in Longwood is 40-49 years. Households in Longwood are primarily couples with children and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Longwood work in a professional occupation. In 2011, 89.7% of the homes in Longwood were owner-occupied compared with 102.3% in 2016.