Hangzhou is classified as a sub-provincial city and forms the core of the Hangzhou Metropolitan Area, the fourth-largest metropolitan area in China. During the 2010 Chinese census, the metropolitan area held 21.102 million people over an area of 34,585 km2 (13,353 sq mi). Hangzhou prefecture had a registered population of 8,892,000 and the built-up area (including the 9 urban districts and the Keqiao and Yuecheng districts of Shaoxing) held 8,874,348.
In September 2015, Hangzhou was awarded the 2022 Asian Games. It will be the third Chinese city to play host to the Asian Games after Beijing 1990 and Guangzhou 2010. On November 16, 2015, President Xi Jinping announced that Hangzhou would host the eleventh G-20 summit on September 4–5, 2016.