The Territory of Christmas Island is an Australian external territory comprising the island of the same name. Christmas Island is located in the Indian Ocean, around 350 kilometres south of Java and Sumatra and around 1,550 kilometres north-west of the closest point on the Australian mainland. It has an area of 135 square kilometres . Christmas Island had a population of 1,843 residents as of 2016, the majority of whom live in settlements on the northern tip of the island.(Wikipedia)