The size of Kyvalley is approximately 26.1 square kilometres. The population of Kyvalley in 2011 was 328 people. By 2016 the population was 309 showing a population decline of 5.8% in the area during that time. The predominant age group in Kyvalley is 10-19 years. Households in Kyvalley are primarily childless couples and are likely to be repaying $1400 - $1799 per month on mortgage repayments. In general, people in Kyvalley work in a managers occupation. In 2011, 83.2% of the homes in Kyvalley were owner-occupied compared with 79.6% in 2016.