The size of Docker is approximately 42.5 square kilometres. The population of Docker in 2011 was 329 people. By 2016 the population was 112 showing a population decline of 66.0% in the area during that time. The predominant age group in Docker is 50-59 years. Households in Docker are primarily couples with children and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Docker work in a managers occupation. In 2011, 79.6% of the homes in Docker were owner-occupied compared with 57.2% in 2016.