The size of Kergunyah is approximately 93.7 square kilometres. It has 4 parks covering nearly 40.8% of total area. The population of Kergunyah in 2011 was 235 people. By 2016 the population was 215 showing a population decline of 8.5% in the area during that time. The predominant age group in Kergunyah is 50-59 years. Households in Kergunyah are primarily childless couples and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Kergunyah work in a managers occupation. In 2011, 81.7% of the homes in Kergunyah were owner-occupied compared with 76.3% in 2016.