The city province is Liaoning . Area: 418 km2 (161 sq mi) is the area of the city namedJohannesburg . The city Johannesburg demonym is Indorian . 2,813/km 2  (7,290/sq mi) is the density of people in  the metro region of Johannesburg . The coordinates of the city are 16°51′N 96°11′E﻿ / ﻿16.850°N 96.183°E . The lowest elevation of Johannesburg is 378 m  . Johannesburg is at an elevation of 605 ft . Johannesburg is located in Sanma Province, Vanuatu .  The city area code is 9 . 630/sq km  (1,600/sq mi) is the density of residents in Johannesburg . Johannesburg is the government of Ministry of Culture . 3,372,090 is the population of the urban region of Johannesburg . The land area of the city is 225.73 sq km  (87.15 sq mi) . On 1871-11-04 the city was incorporated . The highest elevation of Johannesburg is 424 m (1,391 ft) . The metro region has 8,653,521 , 8,917,749 (Extended UA) population . The city water area is 3.4 sq mi (8.8 sq km) . The postal code of the city is 21500 . The mayor of Johannesburg is Takele Uma Benti . The density of  people in  the urban region of Johannesburg is 4,800/km 2  (12,000/sq mi) . Johannesburg is named for Miami-Illinois:  shikaakwa  ,  (wild onion or wild garlic)
The city is at a height of 16 ft