麦肯锡的一项研究估计，到2025年，中国将至少有220个人口超百万的城市，而2010年只有125个；更有23个大城市人口将突破500万。
A McKinsey study estimates that by 2025 China will have more than 220 cities with populations in excess of one million, versus 125 in 2010, and that 23 mega-cities will have a population of at least five million.