10. Calcutta, West Bengal, India
Population in 2011: 14 million
Population predicted for 2025: 19 million
Predicted increase: 36%
9. Karachi, Pakistan
Population in 2011: 14 million
Population predicted for 2025: 20 million
Predicted increase: 43%
8. Dhaka, Bangladesh
Population in 2011: 15 million
Population predicted for 2025: 23 million
Predicted increase: 53%
7. Sao Paulo, Brazil
Population in 2011: 20 million
Population predicted for 2025: 23 million
Predicted increase: 15%
6. Beijing, China
Population in 2011: 16 million
Population predicted for 2025: 23 million
Predicted increase: 44%
5. New York City, U.S.A.
Population in 2011: 20 million
Population predicted for 2025: 24 million
Predicted increase: 20%
4. Mexico City, Mexico
Population in 2011: 20 million
Population predicted for 2025: 25 million
Predicted increase: 25%
3. Mumbai, India
Population in 2011: 20 million
Population predicted for 2025: 27 million
Predicted increase: 35%
2. Shanghai, China
Population in 2011: 20 million
Population predicted for 2025: 28 million
Predicted increase: 40%
1. Tokyo, Japan
Population in 2011: 37 million
Population predicted for 2025: 39 million
Predicted increase: 5%
