Mumbai, also known as Bombay, is the capital city of the Indian state of Maharashtra. Located on the Konkan coast along the west coast of India, the city features a deep natural harbour and serves as the center of the Mumbai Metropolitan Region.
As the financial capital of India, Mumbai is the most populous city proper in the country, with an estimated population of 12.5 million. The surrounding metropolitan area exceeds 23 million people, making it one of the most populous metropolitan areas globally. In 2008, the city was designated as an alpha world city and currently holds the highest number of billionaires of any city in Asia.