The size of Geham is approximately 47.3 square kilometres. It has 3 parks covering nearly 0.5% of total area. The population of Geham in 2011 was 441 people. By 2016 the population was 499 showing a population growth of 13.2% in the area during that time. The predominant age group in Geham is 10-19 years. Households in Geham are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Geham work in a professional occupation. In 2011, 86.1% of the homes in Geham were owner-occupied compared with 86.5% in 2016. Currently the median sales price of houses in the area is $685,000.