| Inhabitants per billionaire, 2021 | |
| Kuwait City | 33,090 |
| San Francisco | 56,209 |
| Hong Kong | 59,516 |
| Doha | 90,709 |
| Singapore | 104,997 |
| New York | 144,283 |
| London | 160,917 |
| Abu Dhabi | 166,088 |
| Moscow | 171,315 |
| Hambourg | 198,339 |
| Melbourne | 201,095 |
| Las Vegas | 212,181 |
| Jeddah | 221,940 |
| Los Angeles | 224,064 |
| Washington DC | 228,614 |