The size of Tarragindi is approximately 4.5 square kilometres. It has 16 parks covering nearly 13.6% of total area. The population of Tarragindi in 2011 was 9,964 people. By 2016 the population was 10,794 showing a population growth of 8.3% in the area during that time. The predominant age group in Tarragindi is 40-49 years. Households in Tarragindi are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Tarragindi work in a professional occupation. In 2011, 77% of the homes in Tarragindi were owner-occupied compared with 77% in 2016. Currently the median sales price of houses in the area is $1,117,500.