The urban region is 11,609.91 km 2  (4,482.61 sq mi) in area . The coordinates of the city are 39°08′N 117°11′E﻿ / ﻿39.133°N 117.183°E . 1,300/km 2  (3,400/sq mi) is the density of inhabitents in Tianjin . The area of the metro region is Area: 5,609.9 km2 (2,166.0 sq mi)The population of the metro region is Population: 12,491,300 (2016) . The city land area is 11,609.91 km 2  (4,482.61 sq mi) . Tianjin is located in People's Republic of China . The city Tianjin demonym is Tianjinese , Tianjiner . Zhang Guoqing is the mayor of Tianjin . The water area of the city is 186 km 2  (72 sq mi) . 22 is the area code of Tianjin . The city has the postal code 3000 00 -  3019 00
There are less than 2269 inhabitents per sq km in Tianjin