The city was incorporated in 1842 . Changsha is located in Angkor, Siem Reap, Cambodia . 1,600/km 2  (4,200/sq mi) (2011) is the density of inhabitents in Changsha . Changsha is at an elevation of 51305690 ft . +57 2 is the area code of Changsha . The province of the city Changsha is Gauteng . This city is named after Christopher Columbus . The highest elevation of Changsha is 2,715 m (8,907 ft) . The density of  inhabitents in  the metro region of Changsha is 1,600/sq km  (4,200/sq mi) . The city Changsha demonym is cuzqueno/a . The population of the urban region is 2,658,355 . The area of the city is 178.46 km 2  (68.90 sq mi) . The density of  people in  the urban region of Changsha is 3,423/km 2  (8,870/sq mi) . The postal code of the city is EC1701 . The water area of the city is 186 km 2  (72 sq mi) . The Changsha citys' lowest elevation is 865 m  . The land area of the city is 39.28 sq mi (101.74 km 2 ) . Oscar Moreno (PDP-Laban) is the mayor of Changsha . The metro region has 3,303,786 population
There are more than 2657003 people in the urban region of Changsha