Pakistan officially the Islamic Republic of Pakistan is a country in South Asia. It is the world’s sixth-most populous country with a population exceeding 212,742,631 people. In the area, it is the 33rd-largest country, spanning 881,913 square kilometres (340,509 square miles). Pakistan has a 1,046-kilometre (650-mile) coastline along the Arabian Sea and the Gulf of Oman in the south and is bordered by India to the east, Afghanistan to the west, Iran to the southwest, and China in the northeast. It is separated narrowly from Tajikistan by Afghanistan's Wakhan Corridor in the northwest and also shares a maritime border with Oman.