The postal code of the city is 9XXXXXX . Changchun is located in Cameroon . The mayor of Changchun is Evelyn Trejo de Rosales (UNT) . 026 is the area code of Changchun . The lowest elevation of Changchun is 190 m  . The demonym of the city Changchun is Yangonite . Changchun is at an elevation of 82.97 m . 25°00′40″N 121°26′45″E﻿ / ﻿25.01111°N 121.44583°E are the coordinates of the city. . The density of  inhabitents in  the urban region of Changchun is 4,800/km 2  (12,000/sq mi) . Changchun is named for Calgary, Mull . The city land area is 16.0 sq mi (41.4 km 2 ) . The metro region has 3,442,361 population . The city province is Cebu (geographically only) . The density of  people in  the metro region of Changchun is 1,600/sq km  (4,200/sq mi) . Changchun is the government of Ministry of Culture . The city was incorporated in March 6, 1836 (city) . The density of  residents in Changchun is 1,100/sq km  (2,900/sq mi) . The water area of the city is 2.52 sq mi (6.53 sq km ) . The Changchun city highest elevation is 424 m (1,391 ft) . The population of the urban region is 8,220,207
12.77 percentage is water in Changchun