The United Nations uses three definitions for what constitutes a city, as not all cities in all jurisdictions are classified using the same criteria. Cities may be defined as the cities proper, the extent of their urban area, or their metropolitan regions.The largest city by population using the city proper definition, which is the area under the administrative boundaries of a local …

The demographics of China demonstrate a large population with a relatively small youth component, partially a result of China's one-child policy.China's population reached 1 billion in 1982. As of December 2021, China's population stood at 1.413 billion. According to the 2020 census, 91.11% of the population was Han Chinese, and 8.89% were minorities.