The city province is Alberta . Douala is at an elevation of 5 m . The Douala city highest elevation is 14,110 ft (4,300 m) . Douala is named for Confluence of Grand River and Gunnison River . The urban region is Area : 598.75 km2 (231.18 sq mi) in area . 775 is the area code of Douala . The Douala citys' lowest elevation is 2 m  . The city was incorporated in 1842 . The city Douala demonym is Marabin, Maracaibero(a), Maracucho(a) . The city water area is 0.68 sq mi (1.77 km 2 ) . Douala is the government of Ministry of Culture . The area of the metro region is Area: 2,805 km2 (1,083 sq mi) . The mayor of Douala is Solomon Mguni . The density of  people in  the metro region of Douala is 720/km 2  (1,900/sq mi) . Douala is located in Angkor, Siem Reap, Cambodia . 10°38′N 71°38′W﻿ / ﻿10.633°N 71.633°W are the coordinates of the city. . 2,900/km 2  (7,400/sq mi) is the density of residents in Douala . The postal code of the city is 080020
Water covers 847 sq mi area of the city