The size of Pike River is approximately 121.4 square kilometres. The population of Pike River in 2011 was 418 people. By 2016 the population was 45 showing a population decline of 89.2% in the area during that time. The predominant age group in Pike River is 10-19 years. Households in Pike River are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Pike River work in a labourer occupation. In 2011, 52.1% of the homes in Pike River were owner-occupied compared with 42.1% in 2016.