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