The size of Rocksberg is approximately 26.2 square kilometres. It has 4 parks covering nearly 0.2% of total area. The population of Rocksberg in 2011 was 300 people. By 2016 the population was 314 showing a population growth of 4.7% in the area during that time. The predominant age group in Rocksberg is 60-69 years. Households in Rocksberg are primarily childless couples and are likely to be repaying $1800 – $2399 per month on mortgage repayments. In general, people in Rocksberg work in a clerical occupation. In 2011, 84.7% of the homes in Rocksberg were owner-occupied compared with 85.1% in 2016.