Dharavi, Mumbai, where population density reaches 1 million people per square mile. Dharavi is one of the largest slums in Asia.
Dharavi is a slum and administrative ward, over parts of Sion, Bandra, Kurla and Kalina suburbs of Mumbai, India. It is sandwiched between Mahim in the west and Sion in the east, and spread over an area of 0.67 square miles. In 1986, the population was estimated at 530,225, but modern Dharavi has a population of between 600,000 and over 1 million people.
In expensive Mumbai, Dharavi provides a cheap, but illegal, alternative where rents were as low as 4 US dollars per month in 2006. Dharavi exports goods around the world. The total turnover is estimated to be between 500 million US dollars and over 650 million US dollars per year.