The size of Robertstown is approximately 136.3 square kilometres. The population of Robertstown in 2011 was 332 people. By 2016 the population was 231 showing a population decline of 30.4% in the area during that time. The predominant age group in Robertstown is 60-69 years. Households in Robertstown are primarily childless couples and are likely to be repaying $300 - $449 per month on mortgage repayments. In general, people in Robertstown work in a managers occupation. In 2011, 84.3% of the homes in Robertstown were owner-occupied compared with 85.6% in 2016. Currently the median sales price of houses in the area is $93,475.