The size of Tranmere is approximately 2.9 square kilometres. It has 8 parks covering nearly 2.1% of total area. The population of Tranmere in 2011 was 1,441 people. By 2016 the population was 1,726 showing a population growth of 19.8% in the area during that time. The predominant age group in Tranmere is 40-49 years. Households in Tranmere are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Tranmere work in a professional occupation. In 2011, 86.3% of the homes in Tranmere were owner-occupied compared with 88.5% in 2016. Currently the median sales price of houses in the area is $1,000,000.