The size of Kalkarindji is approximately 6.2 square kilometres. The population of Kalkarindji in 2011 was 343 people. By 2016 the population was 319 showing a population decline of 7.0% in the area during that time. The predominant age group in Kalkarindji is 0-9 years. Households in Kalkarindji are primarily couples with children and are likely to be repaying $950 - $1199 per month on mortgage repayments. In general, people in Kalkarindji work in a professional occupation. In 2006, 20.5% of the homes in Kalkarindji were owner-occupied compared with 5.7% in 2011.