The size of Guildford is approximately 5.9 square kilometres. It has 20 parks covering nearly 8.3% of total area. The population of Guildford in 2011 was 19,851 people. By 2016 the population was 22,330 showing a population growth of 12.5% in the area during that time. The predominant age group in Guildford is 20-29 years. Households in Guildford are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Guildford work in a trades occupation. In 2011, 56.3% of the homes in Guildford were owner-occupied compared with 51.5% in 2016. Currently the median sales price of houses in the area is $865,000.