Changsha is named for Christopher Columbus . On 1842 the city was incorporated . 3,423/km 2  (8,870/sq mi) is the density of inhabitents in  the urban region of Changsha . The Changsha citys' lowest elevation is 2,838 ft . The density of  inhabitents in Changsha is 1,600/km 2  (4,200/sq mi) (2011) . The city water area is 186 km 2  (72 sq mi) . The city Changsha province is Gauteng . The city land area is 39.28 sq mi (101.74 km 2 ) . The city has the postal code EC1701 . Changsha is located in Angkor, Siem Reap, Cambodia . The city Changsha demonym is cuzqueno/a . The area of the city is 178.46 km 2  (68.90 sq mi) . The Changsha city highest elevation is 2,715 m (8,907 ft) . The mayor of Changsha is Oscar Moreno (PDP-Laban) . Changsha is at an elevation of 15641734 m . The urban region has 2,658,355 population . 3,303,786 is the population of the metro region of Changsha . The density of  inhabitents in  the metro region of Changsha is 1,600/sq km  (4,200/sq mi) .  The city area code is +57 2
Changsha was legally declared as a city in 1842