The size of Glenalta is approximately 1.2 square kilometres. It has 4 parks covering nearly 4.5% of total area. The population of Glenalta in 2011 was 1,979 people. By 2016 the population was 1,972 showing a population decline of 0.4% in the area during that time. The predominant age group in Glenalta is 40-49 years. Households in Glenalta are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Glenalta work in a professional occupation. In 2011, 87.9% of the homes in Glenalta were owner-occupied compared with 89.5% in 2016. Currently the median sales price of houses in the area is $732,500.