The size of Dilkoon is approximately 31.8 square kilometres. It has 7 parks covering nearly 3.5% of total area. The population of Dilkoon in 2011 was 258 people. By 2016 the population was 43 showing a population decline of 83.3% in the area during that time. The predominant age group in Dilkoon is 50-59 years. Households in Dilkoon are primarily childless couples and are likely to be repaying $1400 - $1799 per month on mortgage repayments. In general, people in Dilkoon work in a clerical occupation. In 2011, 88.2% of the homes in Dilkoon were owner-occupied compared with 70% in 2016.