The size of Girvan is approximately 68.4 square kilometres. It has 2 parks covering nearly 21% of total area. The population of Girvan in 2011 was 350 people. By 2016 the population was 158 showing a population decline of 54.9% in the area during that time. The predominant age group in Girvan is 50-59 years. Households in Girvan are primarily childless couples and are likely to be repaying $1400 - $1799 per month on mortgage repayments. In general, people in Girvan work in a machinery operators and drivers occupation. In 2011, 73.5% of the homes in Girvan were owner-occupied compared with 90.8% in 2016. Currently the median sales price of houses in the area is $312,500.