What is the population of Mumbai?

Answer 1

There are around 13,662,885 people living in Mumbai.
13,830,884
The population of Greater Mumbai urban agglomeration, including suburbs like Kalyan-Dombivali, Navi Mumbai and Thane (all three probably with over 1 million inhabitants nowadays) is calculated by the UN to be 18,978,000 in 2007. The population of the Greater Mumbai Municipal Corporation, including the two districts of Mumbai and Mumbai Suburban and together is the most common definition of the city of Mumbai, is probably about 13,5 million by the same date. There is also a definition for local planning that's called Mumbai Metropolitan Region, which had 17,8 million inhabitans in 2001, and have probably reached approx. 21 million by 2007.