The Changsha city highest elevation is 2,715 m (8,907 ft) . The land area of the city is 39.28 sq mi (101.74 km 2 ) . The mayor of Changsha is Oscar Moreno (PDP-Laban) . Changsha is at an elevation of 15641734 m . The postal code of the city is EC1701 . Changsha is named for Christopher Columbus . 1,600/sq km  (4,200/sq mi) is the density of inhabitents in  the metro region of Changsha . The metro region has 3,303,786 population . The city was incorporated in 1842 . The city water area is 186 km 2  (72 sq mi) .  The city area code is +57 2 . The urban region has 2,658,355 population . Changsha is located in Angkor, Siem Reap, Cambodia . The lowest elevation of Changsha is 865 m  . The city Changsha province is Gauteng . The density of  inhabitents in Changsha is 1,600/km 2  (4,200/sq mi) (2011) . 3,423/km 2  (8,870/sq mi) is the density of inhabitents in  the urban region of Changsha . The area of the city is 178.46 km 2  (68.90 sq mi) . The demonym of the city Changsha is cuzqueno/a
There are 4514 people per sq mi in the metro region of Changsha