The size of Nicholls is approximately 6.7 square kilometres. It has 29 parks covering nearly 29.7% of total area. The population of Nicholls in 2011 was 6,952 people. By 2016 the population was 6,871 showing a population decline of 1.2% in the area during that time. The predominant age group in Nicholls is 50-59 years. Households in Nicholls are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Nicholls work in a professional occupation. In 2011, 81% of the homes in Nicholls were owner-occupied compared with 82% in 2016. Currently the median sales price of houses in the area is $1,250,000.