Karachi ( Karācī (help·info), Urdu: کراچی; Sindhi: ڪراچي) is the largest city, and the main seaport and financial centre of Pakistan, as well as the capital of the province of Sindh. The city has an estimated population of 13 to 15 million, while the total metropolitan area has a population of over 13 million. Results in April 2012 of Pakistan's latest census initial tabulations show that the district is home to over 21 million people, at a density of nearly 6,000 people per square kilometer (15,500 per square mile). Karachi is the most populous city in the country, one of the world's largest cities in terms of population and also the 10th largest urban agglomeration in the world. It is Pakistan's premier centre of banking, industry, economic activity and trade and is home to Pakistan's largest corporations, including those involved in textiles, shipping, automotive industry, entertainment, the arts, fashion, advertising, publishing, software development and medical research. The city is a major hub of higher education in South Asia and the wider Muslim world.