The size of Jandabup is approximately 18.6 square kilometres. It has 4 parks covering nearly 45.3% of total area. The population of Jandabup in 2011 was 340 people. By 2016 the population was 283 showing a population decline of 16.8% in the area during that time. The predominant age group in Jandabup is 60-69 years. Households in Jandabup are primarily couples with children and are likely to be repaying over $4000 per month on mortgage repayments. In general, people in Jandabup work in a managers occupation. In 2011, 82.6% of the homes in Jandabup were owner-occupied compared with 88.5% in 2016.