The area of the city is 19.4 sq mi (50.2 km 2 ) . The population of the urban region is 2,947,722 . Karachi is located in Indonesia . On March 6, 1836 (city) the city was incorporated . The density of  residents in  the metro region of Karachi is 1,275/sq km (3,300/sq mi) . This city is named after Saint James . The mayor of Karachi is Norman Maurice Armitage . The population of the metro region is 1,013,389 . Karachi is the government of Kamloops City Council . 3,200/km 2  (8,200/sq mi) is the density of inhabitents in Karachi . The province of the city Karachi is Alborz . The Karachi city highest elevation is 1,879 m (6,165 ft) . The postal code of the city is 9XXXXXX . The Karachi citys' lowest elevation is 0 m  .  The city area code is +57 4 . The demonym of the city Karachi is Evanstonian . 3,300/km 2  (8,600/sq mi) is the density of residents in  the urban region of Karachi . The city water area is 3.73 sq mi (9.67 km 2 ) . Karachi is at an elevation of 500 m
50.2 km 2  is covered by the city