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