Cangzhou is a prefecture-level city located in the southeastern extension of Hebei Province, China. It is situated along the coast of the Bohai Sea, positioned between the cities of Tianjin and Shandong. The city lies approximately 90 kilometres from the port of Tianjin and 180 kilometres from Beijing.
The prefecture-level administrative unit has a total population of 7,300,783 as of the 2020 census, with a resident population of 7,227,700 reported at the end of 2024. The city's built-up area consists of the Yunhe district, Xinhua district, and Cang County, which are largely conurbated.