The size of Marraweeney is approximately 42.8 square kilometres. The population of Marraweeney in 2011 was 333 people. By 2016 the population was 47 showing a population decline of 85.9% in the area during that time. The predominant age group in Marraweeney is 60-69 years. Households in Marraweeney are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Marraweeney work in a managers occupation. In 2011, 82% of the homes in Marraweeney were owner-occupied compared with 72.7% in 2016.