Tianjin (天津市) is a provincial-level administrative region under the direct administration of central government, one of the nine National Central Cities, and one of China’s mega-cities. The city has 16 districts under its jurisdiction, with a total area of 11916.85 square kilometers, a built-up area of 1007.91 square kilometers, a resident population of 15.5 million with an urban population of 12.9 million.
