The size of Seddon is approximately 0.9 square kilometres. It has 4 parks covering nearly 1.4% of total area. The population of Seddon in 2011 was 4,851 people. By 2016 the population was 5,125 showing a population growth of 5.6% in the area during that time. The predominant age group in Seddon is 30-39 years. Households in Seddon are primarily couples with children and are likely to be repaying $3000 - $3999 per month on mortgage repayments. In general, people in Seddon work in a professional occupation. In 2011, 60.3% of the homes in Seddon were owner-occupied compared with 57% in 2016. Currently the median sales price of houses in the area is $1,120,000.