The water area of the city is 6.286 sq mi (16.281 km 2 ) 29.82% . The metro region is 3,341.11 sq mi (8,653 km 2 ) in area . The city was incorporated in February 17, 1909 . The lowest elevation of Johannesburg is 246 ft . Johannesburg is named for Calgary, Mull . 985.13/km 2  (2,551.5/sq mi) is the density of residents in Johannesburg . 4,484/km 2  (11,610/sq mi) is the density of people in  the metro region of Johannesburg . The city Johannesburg province is Cebu (geographically only) . 464.71/km 2  (1,203.6/sq mi) is the density of people in  the urban region of Johannesburg . Johannesburg is at an elevation of 2355 m . Johannesburg is located in Nicaragua . Johannesburg is the government of U.S. National Park Service . Johannesburg has 1,779,361 population . The demonym of the city Johannesburg is Tbilisian , Tbilisite . The urban region has 16,349,831 (2nd) population . The Johannesburg city highest elevation is 5,364 m (17,598 ft) .  The city area code is 775 . The mayor of Johannesburg is Maung Maung Soe . The land area of the city is 840 km 2  (325 sq mi) . The city has the postal code EC1701
The elevation range of Johannesburg is 5289 m