Ma'anshan is a prefecture-level city in the east of Anhui Province in Eastern China. An industrial city stretching across the Yangtze River, Ma'anshan borders Hefei to the west, Wuhu to the southwest, and Nanjing to the east. It is a core city of the Nanjing Metropolitan Circle. Ma'anshan is home to 1,366,302 inhabitants at the 2010 census, all being part of built up area since Dangtu County is now linked to the 3 urban districts. After the August 2011 administrative re-regionalization of Anhui Province, its population becomes 2.283 million, and it administers 2 additional counties (He and Hanshan).