The city land area is 1.275 sq mi (3.303 sq km ) . The area of the urban region is Area : 993.5 km2 (383.6 sq mi) . The city has the postal code 080020 . Johannesburg is at an elevation of 6 m . The province of the city Johannesburg is Kadiogo . The Johannesburg citys' lowest elevation is 1,750 m . The metro region has Population: 3,113,725  population . The mayor of Johannesburg is Armand Béouindé (since 2016) . The population of Johannesburg is 19.500.000 . 0211 is the area code of Johannesburg . 2,305/km 2  (5,970/sq mi) is the density of people in  the urban region of Johannesburg . The Johannesburg city highest elevation is 424 m (1,391 ft) . The city water area is 4.12 sq mi (10.67 km 2 ) . The demonym of the city Johannesburg is Mashhadi, Mashadi, Mashdi (informal) . Johannesburg is named for Calgary, Mull . The density of  inhabitents in Johannesburg is 7,400/km 2  (19,000/sq mi) . The city was incorporated in 1871 (Huntington) . Johannesburg is the government of Swedish Ice Hockey Association . The coordinates of the city are 56°19′37″N 44°00′27″E﻿ / ﻿56.32694°N 44.00750°E  . The density of  residents in  the metro region of Johannesburg is 210.9/km 2  (546.2/sq mi)
In the map the city could be found at 56°19′37″N 44°00′27″E﻿ / ﻿56.32694°N 44.00750°E  by Johannesburg