The size of Proston is approximately 46.3 square kilometres. It has 1 park covering nearly 1.1% of total area. The population of Proston in 2011 was 495 people. By 2016 the population was 375 showing a population decline of 24.2% in the area during that time. The predominant age group in Proston is 60-69 years. Households in Proston are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Proston work in a managers occupation. In 2011, 72.9% of the homes in Proston were owner-occupied compared with 73.2% in 2016. Currently the median sales price of houses in the area is $157,500.