Top Cities in the World by Population

1 Jakarta Indonesia  41914 
2 Dhaka Bangladesh  36585 
3 Tokyo Japan  33413 
4 New Delhi India  30222 
5 Shanghai China  29559 
6 Guangzhou China  27563 
7 Cairo Egypt  25566 
8 Manila Philippines  24735 
9 Kolkata India 23768 
10 Seoul, South Korea  22490 
11 Karachi Pakistan  21423 
12 Mumbai India  20203 
13 São Paulo Brazil  18950 
14 Bangkok Thailand  18180 
15 Ciudad de México, Mexico  17734 
16 Beijing China  17013 
17 Lahore Pakistan  15156 
18 Istanbul Turkey  15015 
19 Moscow, Russia  14525 
20 Ho Chi Minh City Viet Nam  14053 
21 Buenos Aires Argentina  14018 
22 New York City, US  13920 
23 Shenzhen China  13878 
24 Bengaluru India  13187 
25 Osaka Japan  12964 
26 Lagos Nigeria  12792 
27 Los Angeles, US  12740 
28 Luanda Angola  11370 
29 Chennai India  11153 
30 Kinshasa, DR Congo 10944 
31 Bogotá Colombia  10624 
32 Lima Peru  10580 
33 London UK  10416 
34 Hajipur India  9942 
35 Rio de Janeiro Brazil  9500 
36 Paris France  9382 
37 Hyderabad India  9191 
38 Tehran, Iran 9175 
39 Taipei, Taiwan 9137 
40 Bandung Indonesia  8909 
41 Kuala Lumpur Malaysia  8444 
42 Dar es Salaam, Tanzania 7795 
43 Suzhou China  7731 
44 Ahmedabad India  7632 
45 Hangzhou China  7500 
46 Wuhan China  7364 
47 Tianjin China  7285 
48 Alexandria Egypt  7267 
49 Nagoya Japan  7146 
50 Johannesburg South Africa  7077   

Source: https://www.un.org/development/desa/pd/sites/www.un.org.development.desa.pd/files/undesa_pd_2025_wup2025_summary_of_results.pdf

Update:  I think this is a selected list of cities.  Where are Chicago, Dallas, Houston and Toronto?  They all have metropolitan areas with more than 7 millions people.