澳大利亚联邦位于南半球澳州，包括澳大利亚大陆和塔斯马尼亚岛，海岸线长达20125公里，面积768万平方公里，人口1800万，其中2／3以上的人口集中在东南沿海地区。城市人口约占全国人口的3／4，仅悉尼和墨尔本就集中了全国1／3的人口，城市化水平非常高。大部分居民信奉基督教? The Commonwealth of Australia is located in Australia, the southern hemisphere, including Australia and Tasmania. The coastline is 2,015 kilometers long, covers an area of ​​7,680,000 square kilometers and has a population of 18 million. More than two thirds of the population is located in the southeastern coastal areas. The urban population accounts for about 3/4 of the national population. Only Sydney and Melbourne have concentrated one-third of the country’s population, and urbanization is very high. Most residents believe in Christianity?