15. Portland, Oregon (USA)
Projected 2016 GDP per capita, PPP: $68,453
With $68,453 purchasing power parity GDP, Portland, Oregon, takes the fifteenth spot on the list of the world’s richest cities. Around 600,000 of its citizens (2.4 million citizens of a metro area), also enjoy a steady GDP growth rate of 0.6%. This means the largest Oregonian city used to have the GDP PPP figure of $67,639 only a couple of years ago.