The size of Trinity Park is approximately 3 square kilometres. It has 2 parks covering nearly 1.8% of total area. The population of Trinity Park in 2011 was 2,459 people. By 2016 the population was 3,116 showing a population growth of 26.7% in the area during that time. The predominant age group in Trinity Park is 30-39 years. Households in Trinity Park are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Trinity Park work in a professional occupation. In 2011, 64.4% of the homes in Trinity Park were owner-occupied compared with 61.2% in 2016. Currently the median sales price of houses in the area is $577,500.