Heres a list of the top twenty citys relative to population
1. Tokyo-Yokohama, Japan – 33,200,000
2. New York, United States – 17,800,000
3. Sao Paulo, Brazil – 17,700,000
4. Seoul-Incheon, South Korea – 17,500,000
5. Mexico City, Mexico – 17,400,000
6. Osaka-Kobe-Kyoto, Japan – 16,425,000
7. Manila, Philippines – 14,750,000
8. Mumbai, India (formerly Bombay) – 14,350,000
9. Jakarta, Indonesia – 14,250,000
10. Lagos, Nigeria – 13,400,000
11. Kolkata, India (formerly Calcutta) – 12,700,000
12. Delhi, India – 12,300,000
13. Cairo, Egypt – 12,200,000
14. Los Angeles, United States – 11,789,000
15. Buenos Aires, Argentina – 11,200,000
16. Rio de Janeiro, Brazil – 10,800,000
17. Moscow, Russia – 10,500,000
18. Shanghai, China – 10,000,000
19. Karachi, Pakistan – 9,800,000
20. Paris, France – 9,645,000