Johannesburg is at an elevation of 20 ft . The metro region has Population: 3,113,725  population . 2,305/km 2  (5,970/sq mi) is the density of people in  the urban region of Johannesburg . Johannesburg is the government of Swedish Ice Hockey Association . 0211 is the area code of Johannesburg . The highest elevation of Johannesburg is 424 m (1,391 ft) . The city province is Kadiogo . On 1871 (Huntington) the city was incorporated . The demonym of the city Johannesburg is Mashhadi, Mashadi, Mashdi (informal) . The population of Johannesburg is 19.500.000 . Armand Béouindé (since 2016) is the mayor of Johannesburg . 56°19′37″N 44°00′27″E﻿ / ﻿56.32694°N 44.00750°E  are the coordinates of the city. . This city is named after Calgary, Mull . 210.9/km 2  (546.2/sq mi) is the density of inhabitents in  the metro region of Johannesburg . The density of  inhabitents in Johannesburg is 7,400/km 2  (19,000/sq mi) . The postal code of the city is 080020 . The land area of the city is 1.275 sq mi (3.303 sq km ) . The urban region is Area : 993.5 km2 (383.6 sq mi) in area . The Johannesburg citys' lowest elevation is 1,750 m . The city water area is 4.12 sq mi (10.67 km 2 )
529 sq mi area of the city Johannesburg is land