The size of Mininera is approximately 111.6 square kilometres. It has 3 parks covering nearly 1.5% of total area. The population of Mininera in 2011 was 297 people. By 2016 the population was 47 showing a population decline of 84.2% in the area during that time. The predominant age group in Mininera is 50-59 years. Households in Mininera are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Mininera work in a managers occupation. In 2011, 76.8% of the homes in Mininera were owner-occupied compared with 59.1% in 2016.