The size of Seaford is approximately 12.5 square kilometres. It has 29 parks covering nearly 17.9% of total area. The population of Seaford in 2011 was 16,032 people. By 2016 the population was 16,455 showing a population growth of 2.6% in the area during that time. The predominant age group in Seaford is 30-39 years. Households in Seaford are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Seaford work in a professional occupation. In 2011, 63.4% of the homes in Seaford were owner-occupied compared with 62.6% in 2016. Currently the median sales price of houses in the area is $777,500.