14. Singapore (Singapore)
Projected 2016 GDP per capita, PPP: $69,293
Singapore is the first non-US city so far on this list of 20 richest cities in the world by 2016 GDP per capita. A southeast Asian city-state of some 5.5 million inhabitants is one of the richest countries in the world. It boasts $69,293 GDP PPP per capita and a growth of 1.8% on a yearly basis. This means its GDP PPP per capita from 2014 was $66,864.