Johannesburg is the government of Swedish Ice Hockey Association . The demonym of the city Johannesburg is Mashhadi, Mashadi, Mashdi (informal) . The area of the urban region is Area : 993.5 km2 (383.6 sq mi) . 19.500.000 is the population of Johannesburg . 0211 is the area code of Johannesburg . The water area of the city is 4.12 sq mi (10.67 km 2 ) . 56°19′37″N 44°00′27″E﻿ / ﻿56.32694°N 44.00750°E  are the coordinates of the city. . The land area of the city is 1.275 sq mi (3.303 sq km ) . The city was incorporated in 1871 (Huntington) . The density of  residents in  the urban region of Johannesburg is 2,305/km 2  (5,970/sq mi) . The postal code of the city is 080020 . The city Johannesburg province is Kadiogo . 7,400/km 2  (19,000/sq mi) is the density of residents in Johannesburg . Armand Béouindé (since 2016) is the mayor of Johannesburg . Johannesburg is at an elevation of 6 m . The lowest elevation of Johannesburg is 5,740 ft  . 210.9/km 2  (546.2/sq mi) is the density of inhabitents in  the metro region of Johannesburg . Population: 3,113,725  is the population of the metro region of Johannesburg . This city is named after Calgary, Mull . The highest elevation of Johannesburg is 424 m (1,391 ft)
The city Johannesburg is 8092km 2 populace