The size of Glenalbyn is approximately 79.8 square kilometres. It has 5 parks covering nearly 5.4% of total area. The population of Glenalbyn in 2011 was 143 people. By 2016 the population was 10 showing a population decline of 93.0% in the area during that time. The predominant age group in Glenalbyn is 50-59 years. Households in Glenalbyn are primarily childless couples and are likely to be repaying under $300 per month on mortgage repayments. In general, people in Glenalbyn work in a managers occupation. In 2011, 94.5% of the homes in Glenalbyn were owner-occupied compared with 150% in 2016.