The size of Sydney is approximately 3 square kilometres. It has 13 parks covering nearly 28.3% of total area. The population of Sydney in 2011 was 14,307 people. By 2016 the population was 17,261 showing a population growth of 20.6% in the area during that time. The predominant age group in Sydney is 20-29 years. Households in Sydney are primarily childless couples and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Sydney work in a professional occupation. In 2011, 33.6% of the homes in Sydney were owner-occupied compared with 29.1% in 2016. Currently the median sales price of houses in the area is $230,000.