The size of Avoca is approximately 102.5 square kilometres. The population of Avoca in 2011 was 1,263 people. By 2016 the population was 1,172 showing a population decline of 7.2% in the area during that time. The predominant age group in Avoca is 60-69 years. Households in Avoca are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Avoca work in a managers occupation. In 2011, 74% of the homes in Avoca were owner-occupied compared with 77.2% in 2016. Currently the median sales price of houses in the area is $350,000.