Tianjin is named for Rao Jodha . Tianjin is at an elevation of 7380 ft . 850/km 2  (2,200/sq mi) is the density of people in Tianjin . The city water area is 4.46 sq km  (1.72 sq mi) . The mayor of Tianjin is Federico Gutiérrez, 2016-2019 . The province of the city Tianjin is Jilin . On December 23, 1814 (village) the city was incorporated . The postal code of the city is 9XXXXXX . 1,407.2 sq mi (3,645 sq km) is the area of the urban region of Tianjin . The land area of the city is 316.42 km 2  (122.17 sq mi) . Population: 12,491,300 (2016) is the population of the metro region of Tianjin . Tianjin is the government of Ministry of Culture . Tianjin is located in Iwaki, Fukushima, Japan . The highest elevation of Tianjin is 14,110 ft (4,300 m) .  The city area code is +55 81 . 1,275/km 2  (3,300/sq mi) is the density of people in  the metro region of Tianjin . The coordinates of the city are 6°13′51″N 75°35′26″W﻿ / ﻿6.23083°N 75.59056°W . The city Tianjin demonym is Indorian . The lowest elevation of Tianjin is 1,240 ft . 2,300/km 2  (6,100/sq mi) is the density of residents in  the urban region of Tianjin
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