Rank Megacity Image Country Continent Population 1 Tokyo Japan Asia 38,800,000 2 Jakarta Indonesia Asia 31,500,000[3] 3 Seoul South Korea Asia 25,514,000[4] 4 Karachi Pakistan Asia 24,300,000[5] 5 Shanghai China Asia 24,152,700[6] 6 Manila Philippines Asia 24,124,000[7] 7 New York City United States North America 23,632,722[8] 8 Mumbai India Asia 23,614,000[9] 9 Mexico City Mexico North America 22,200,000 10 Delhi India Asia 21,753,486[10] 11 Beijing China Asia 21,516,000[11] 12 São Paulo Brazil South America 21,250,000 13 Lagos Nigeria Africa 21,000,000[12] 14 Wuhan China Asia 20,600,000[13] 15 Kyoto-Osaka-Kobe (Keihanshin) Japan Asia 20,260,000 16 Guangzhou China Asia 19,910,000[14] 17 Chongqing China Asia 19,384,100[15] 18 Cairo Egypt Africa 18,810,000 19 Los Angeles United States North America 18,550,288[16][17] 20 Chengdu China Asia 18,427,500 21 Dhaka Bangladesh Asia 18,250,000 22 Moscow Russia Europe 16,900,000 23 Tianjin China Asia 15,469,500 24 Bangkok Thailand Asia 15,350,000 25 Istanbul Turkey Europe, Asia 14,800,000 26 Kolkata India Asia 14,766,000[18] 27 Rio de Janeiro Brazil South America 14,450,000 28 London United Kingdom Europe 13,842,667[19] 29 Buenos Aires Argentina South America 13,834,000[20] 30 Tehran Iran Asia 13,700,000 31 Kinshasa Democratic Republic of Congo Africa 12,500,000 32 Paris France Europe 12,405,426 33 Shenzhen China Asia 12,250,000[19] 34 Harbin China Asia 11,635,971[21] 35 Rhine-Ruhr Germany Europe 11,316,429[22] 36 Lahore Pakistan Asia 10,551,472[23] 37 Chennai India Asia 10,108,888