The size of Tonsley is approximately 1 square kilometres. The population of Tonsley in 2011 was 2,972 people. By 2016 the population was 3,254 showing a population growth of 9.5% in the area during that time. The predominant age group in Tonsley is 20-29 years. Households in Tonsley are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Tonsley work in a professional occupation. In 2011, 62.5% of the homes in Tonsley were owner-occupied compared with 60.3% in 2016. Currently the median sales price of houses in the area is $494,000.