The density of  people in  the urban region of Tianjin is 3,300/km 2  (8,600/sq mi) . The highest elevation of Tianjin is 2,715 m (8,907 ft) . 8°50′18″S 13°14′4″E﻿ / ﻿8.83833°S 13.23444°E are the coordinates of the city. . 7,860,781 is the population of the urban region of Tianjin . The city Tianjin demonym is cuzqueno/a .  The city area code is (+593) 4 . The postal code of the city is 95100 . The population of Tianjin is Population (2015): 2,200,000 . The density of  residents in Tianjin is 11,312/km 2  (29,298/sq mi) . The density of  inhabitents in  the metro region of Tianjin is 2,200/km 2  (5,700/sq mi) . The city was incorporated in 1871-11-04 . The metro region has Population: 12,491,300 (2016) population . Oscar Moreno (PDP-Laban) is the mayor of Tianjin . The water area of the city is 21 km 2  (8 sq mi) . Tianjin is named for Christopher Columbus . Tianjin is the government of U.S. National Park Service . The city province is Lusaka Province . Tianjin is located in Brazil . The land area of the city is 48.42 sq mi (125.41 km 2 )
There are 4131 residents per sq km in the urban region of Tianjin