A new report from the McKinsey Global Institute, Urban World: Cities and the Rise of the Consuming Class, finds that the 600 cities making the largest contribution to a higher global GDP-the City 600-will generate nearly 65 percent of world economic growth by 2025. However, the most dramatic story within the City 600 involves just over 440 cities in emerging economies; by 2025, the Emerging 440 will account for close to half of overall growth. One billion people will enter the global consuming class by 2025. They will have incomes high enough to classify them as significant consumers of goods and services, and around 600 million of them will live in the Emerging 440.

The world's center of economic gravity has changed over past centuries. But since the mid-1980s, the pace of that shift-from the United States and Europe toward Asia- has been increasing dramatically. This trend will continue, so executives and policy makers must be prepared to respond.

Source: McKinsey