The size of Culham is approximately 90.7 square kilometres. It has 6 parks covering nearly 4.7% of total area. The population of Culham in 2011 was 302 people. By 2016 the population was 17 showing a population decline of 94.4% in the area during that time. The predominant age group in Culham is 20-29 years. Households in Culham are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Culham work in a managers occupation. In 2011, 77.4% of the homes in Culham were owner-occupied compared with 150% in 2016.