The size of Holder is approximately 1.9 square kilometres. It has 13 parks covering nearly 8.8% of total area. The population of Holder in 2011 was 2,711 people. By 2016 the population was 2,619 showing a population decline of 3.4% in the area during that time. The predominant age group in Holder is 40-49 years. Households in Holder are primarily childless couples and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Holder work in a professional occupation. In 2011, 79.6% of the homes in Holder were owner-occupied compared with 77.4% in 2016. Currently the median sales price of houses in the area is $905,000.