Greater Mumbai (gm) is an amalgam of 11 islands reclaimed and connected over 100 years or so; seven islands comprise the City and four the suburbs. Spread over 468 sq km, with a population of over 13 million and a population density as high as 27,120 per sq km, India’s most populous city has slums that accommodate, the 2001 census says, over 49 per cent of the population