The size of Marshall is approximately 2.3 square kilometres. It has 1 park covering nearly 3.1% of total area. The population of Marshall in 2011 was 1,798 people. By 2016 the population was 1,899 showing a population growth of 5.6% in the area during that time. The predominant age group in Marshall is 30-39 years. Households in Marshall are primarily childless couples and are likely to be repaying $1400 - $1799 per month on mortgage repayments. In general, people in Marshall work in a professional occupation. In 2011, 72.5% of the homes in Marshall were owner-occupied compared with 61.6% in 2016. Currently the median sales price of houses in the area is $611,500.