The Johannesburg citys' lowest elevation is 246 ft . Johannesburg is at an elevation of 2355 m . The population of Johannesburg is 1,779,361 . 775 is the area code of Johannesburg . Maung Maung Soe is the mayor of Johannesburg . The city water area is 6.286 sq mi (16.281 km 2 ) 29.82% . 3,341.11 sq mi (8,653 km 2 ) is the area of the metro region of Johannesburg . Johannesburg is located in Nicaragua . The highest elevation of Johannesburg is 5,364 m (17,598 ft) . The city land area is 840 km 2  (325 sq mi) . Johannesburg is named for Calgary, Mull . The density of  inhabitents in  the metro region of Johannesburg is 4,484/km 2  (11,610/sq mi) . Johannesburg is the government of U.S. National Park Service . 985.13/km 2  (2,551.5/sq mi) is the density of residents in Johannesburg . The urban region has 16,349,831 (2nd) population . The city Johannesburg demonym is Tbilisian , Tbilisite . On February 17, 1909 the city was incorporated . The province of the city Johannesburg is Cebu (geographically only) . 464.71/km 2  (1,203.6/sq mi) is the density of people in  the urban region of Johannesburg . The postal code of the city is EC1701
The city Johannesburg is 11610/sq mi populace in it's metro region