The size of Murchison is approximately 100.5 square kilometres. The population of Murchison in 2011 was 1,046 people. By 2016 the population was 917 showing a population decline of 12.3% in the area during that time. The predominant age group in Murchison is 60-69 years. Households in Murchison are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Murchison work in a professional occupation. In 2011, 78.2% of the homes in Murchison were owner-occupied compared with 76.6% in 2016. Currently the median sales price of houses in the area is $400,000.