The city land area is 194.74 sq mi (504.38 km 2 ) . Changchun is the government of Ministry of Culture . The lowest elevation of Changchun is 1,750 m . The highest elevation of Changchun is 14,110 ft (4,300 m) . The density of  residents in  the metro region of Changchun is 2,500/km 2  (6,600/sq mi) .  The city area code is (+20) 2 . Changchun is located in Angkor, Siem Reap, Cambodia . 584.4 sq mi (1,513.59 km2) is the area of the urban region of Changchun . Changchun is named for Christ Church, Oxford . The city has the postal code 8320000 . The city Changchun province is Cebu (geographically only) . The coordinates of the city are 12°00′N 8°31′E﻿ / ﻿12.000°N 8.517°E . The density of  people in Changchun is 630/sq km  (1,600/sq mi) . 2,305/km 2  (5,970/sq mi) is the density of residents in  the urban region of Changchun . Changchun is at an elevation of 131 m . The city water area is 3.4 sq mi (8.8 km 2 ) . The city is 344.5 km 2  (133.01 sq mi) in area
Less than 51 sq mi area of the city Changchun is water