Foshan, formerly romanized as Fatshan, is a prefecture-level city in central Guangdong Province in southeastern China. The entire prefecture covers 3,848.49 km2 (1,485.91 sq mi) and has an urban population around 7.2 million.[when?] It forms part of the western side of the Pearl River Delta Economic Zone, which includes Guangzhou to the north and Shenzhen to the east.