Islamabad is the capital of Pakistan, a country located in South Asia. It is bordered by India to the east, Afghanistan to the west, Iran to the southwest, and China in the far northeast. Pakistan is the world's fifth-most populous country with a population of over 212 million people. Islamabad is the most populous city in the country, and it is also the political, cultural, and economic center of the country. The official language of Pakistan is Urdu, and the currency is the Pakistani rupee.