The city has the postal code EC1701 . The density of  inhabitents in Changsha is 1,600/km 2  (4,200/sq mi) (2011) . +57 2 is the area code of Changsha . The area of the city is 178.46 km 2  (68.90 sq mi) . Changsha is at an elevation of 51305690 ft . The city was incorporated in 1842 . The urban region has 2,658,355 population . Changsha is named for Christopher Columbus . The lowest elevation of Changsha is 865 m  . The province of the city Changsha is Gauteng . The density of  people in  the urban region of Changsha is 3,423/km 2  (8,870/sq mi) . 1,600/sq km  (4,200/sq mi) is the density of inhabitents in  the metro region of Changsha . The city Changsha demonym is cuzqueno/a . Changsha is located in Angkor, Siem Reap, Cambodia . The water area of the city is 186 km 2  (72 sq mi) . The city land area is 39.28 sq mi (101.74 km 2 ) . The population of the metro region is 3,303,786 . The Changsha city highest elevation is 2,715 m (8,907 ft) . The mayor of Changsha is Oscar Moreno (PDP-Laban)
One of the highest governing people of the city Changsha is Zhang Guoqing