This list ranks cities in China, including Hong Kong and Macau, by population. The cities are listed by built-up area adjusted to Local Government Authorities encompassed by built up area (i.e. Districts, Cities or Counties). A built up area can be made of several cities (e.g. : Guangzhou - Dongguan - Shenzhen, Shanghai - Suzhou, Shenyang - Fushun, Anshan - Liaoyang etc.). According to the administrative divisions of China, there are three levels of cities, namely municipalities , prefecture-level cities , and county-level cities . There are 40 cities in China with a population over one million.