The city has the postal code 080020 . The demonym of the city Douala is Marabin, Maracaibero(a), Maracucho(a) . Douala is located in Angkor, Siem Reap, Cambodia . 720/km 2  (1,900/sq mi) is the density of people in  the metro region of Douala . 10°38′N 71°38′W﻿ / ﻿10.633°N 71.633°W are the coordinates of the city. . On 1842 the city was incorporated . The city water area is 0.68 sq mi (1.77 km 2 ) . The highest elevation of Douala is 14,110 ft (4,300 m) . Douala is named for Confluence of Grand River and Gunnison River . The city province is Alberta . The mayor of Douala is Solomon Mguni . The urban region is Area : 598.75 km2 (231.18 sq mi) in area .  The city area code is 775 . Area: 2,805 km2 (1,083 sq mi) is the area of the metro region of Douala . Douala is the government of Ministry of Culture . Douala is at an elevation of 5 m . 2,900/km 2  (7,400/sq mi) is the density of residents in Douala . The Douala citys' lowest elevation is 2 m 
The urban region is less than 109 sq mi)