The mayor of Changsha is Oscar Moreno (PDP-Laban) . The city province is Gauteng . The city was incorporated in 1842 . Changsha is at an elevation of 15641734 m . +57 2 is the area code of Changsha . The city land area is 39.28 sq mi (101.74 km 2 ) . The population of the metro region is 3,303,786 . 1,600/sq km  (4,200/sq mi) is the density of inhabitents in  the metro region of Changsha . 178.46 km 2  (68.90 sq mi) is the area of the city namedChangsha . The density of  people in  the urban region of Changsha is 3,423/km 2  (8,870/sq mi) . 2,658,355 is the population of the urban region of Changsha . 1,600/km 2  (4,200/sq mi) (2011) is the density of inhabitents in Changsha . The city has the postal code EC1701 . This city is named after Christopher Columbus . The highest elevation of Changsha is 2,715 m (8,907 ft) . The Changsha citys' lowest elevation is 865 m  . The water area of the city is 186 km 2  (72 sq mi) . Changsha is located in Angkor, Siem Reap, Cambodia . The demonym of the city Changsha is cuzqueno/a
Official address of residents of the city Changsha has zip code EC1701