The size of Haddon is approximately 34.3 square kilometres. It has 1 park. The population of Haddon in 2011 was 1,369 people. By 2016 the population was 1,203 showing a population decline of 12.1% in the area during that time. The predominant age group in Haddon is 50-59 years. Households in Haddon are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Haddon work in a trades occupation. In 2011, 93.7% of the homes in Haddon were owner-occupied compared with 93.6% in 2016. Currently the median sales price of houses in the area is $697,500.