The size of Karoola is approximately 32.2 square kilometres. It has 17 parks covering nearly 0.5% of total area. The population of Karoola in 2011 was 488 people. By 2016 the population was 313 showing a population decline of 35.9% in the area during that time. The predominant age group in Karoola is 50-59 years. Households in Karoola are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Karoola work in a professional occupation. In 2011, 87% of the homes in Karoola were owner-occupied compared with 89.8% in 2016. Currently the median sales price of houses in the area is $427,500.