The size of Winchester is approximately 936 square kilometres. It has 1 park. The population of Winchester in 2006 was 7,432 people. By 2011 the population was 461 showing a population decline of 93.8% in the area during that time. The predominant age group in Winchester is 0-9 years. Households in Winchester are primarily couples with children and are likely to be repaying under $300 per month on mortgage repayments. In general, people in Winchester work in a managers occupation. In 2006, 47.4% of the homes in Winchester were owner-occupied compared with 53.5% in 2011.