International Cost of Living 2019

Singapore is the most expensive city in the world for an expatriate professional migrant to live in as at January 2019, followed by Hong Kong and Luanda. The top 25 are:
1. Singapore (Singapore-Asia-Pacific)
2. Hong Kong (China-Asia-Pacific)
3. Luanda (Angola-Africa)
4. Oslo (Norway-Europe)
5. Zurich (Switzerland-Europe)
6. Hamilton (Bermuda-Americas)
7. Geneva (Switzerland-Europe)
8. Tokyo (Japan-Asia-Pacific)
9. New York (Manhattan) NY (USA-Americas)
10. Monaco (Monaco-Europe)
11. Freetown (Sierra Leone-Africa)
12. San Jose CA (USA-Americas)
13. Bangui (Central African Republic-Africa)
14. Yokohama (Japan-Asia-Pacific)
15. George Town (Cayman Islands-Americas)
16. Copenhagen (Denmark-Europe)
17. Shanghai (China-Asia-Pacific)
18. Nassau (the Bahamas-Americas)
19. San Francisco CA (USA-Americas)
20. Sydney (Australia-Asia-Pacific)
21. Honolulu, HI (USA-Americas)
22. Osaka (Japan-Asia-Pacific)
23. Nagoya (Japan-Asia-Pacific)
24. Kobe (Japan-Asia-Pacific)
25. Macao (China-Asia-Pacific)

https://www.xpatulator.com/cost-of-living-article/International-City-Cost-of-Living-for-Expatriate-Professional-Migrants_716.cfm