The size of Sellicks Beach is approximately 6.3 square kilometres. It has 10 parks covering nearly 4.7% of total area. The population of Sellicks Beach in 2011 was 2,337 people. By 2016 the population was 2,605 showing a population growth of 11.5% in the area during that time. The predominant age group in Sellicks Beach is 40-49 years. Households in Sellicks Beach are primarily couples with children and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Sellicks Beach work in a trades occupation. In 2011, 74.4% of the homes in Sellicks Beach were owner-occupied compared with 74.9% in 2016. Currently the median sales price of houses in the area is $508,500.