The metro region is Area: 2,805 km2 (1,083 sq mi) in area . 2,900/km 2  (7,400/sq mi) is the density of residents in Douala . 720/km 2  (1,900/sq mi) is the density of people in  the metro region of Douala . The city was incorporated in 1842 . The postal code of the city is 080020 . 775 is the area code of Douala . Douala is the government of Ministry of Culture . Douala is named for Confluence of Grand River and Gunnison River . Douala is located in Angkor, Siem Reap, Cambodia . The province of the city Douala is Alberta . The urban region is Area : 598.75 km2 (231.18 sq mi) in area . The water area of the city is 0.68 sq mi (1.77 km 2 ) . Solomon Mguni is the mayor of Douala . Douala is at an elevation of 16 ft . 10°38′N 71°38′W﻿ / ﻿10.633°N 71.633°W are the coordinates of the city. . The highest elevation of Douala is 14,110 ft (4,300 m) . The lowest elevation of Douala is 2 m  . The city Douala demonym is Marabin, Maracaibero(a), Maracucho(a)
There are less than 8347 inhabitents per sq mi in Douala