The city province is Kadiogo . The density of  residents in  the urban region of Johannesburg is 2,305/km 2  (5,970/sq mi) . The city Johannesburg demonym is Mashhadi, Mashadi, Mashdi (informal) . The metro region has Population: 3,113,725  population . The mayor of Johannesburg is Armand Béouindé (since 2016) . 7,400/km 2  (19,000/sq mi) is the density of residents in Johannesburg . This city is named after Calgary, Mull . The Johannesburg citys' lowest elevation is 1,750 m . The postal code of the city is 080020 . The coordinates of the city are 56°19′37″N 44°00′27″E﻿ / ﻿56.32694°N 44.00750°E  . The land area of the city is 1.275 sq mi (3.303 sq km ) . 0211 is the area code of Johannesburg . Johannesburg is the government of Swedish Ice Hockey Association . The water area of the city is 4.12 sq mi (10.67 km 2 ) . The urban region is Area : 993.5 km2 (383.6 sq mi) in area . The Johannesburg city highest elevation is 424 m (1,391 ft) . 19.500.000 is the population of Johannesburg . Johannesburg is at an elevation of 6 m . The density of  residents in  the metro region of Johannesburg is 210.9/km 2  (546.2/sq mi) . The city was incorporated in 1871 (Huntington)
There are 1267 people per sq mi in the metro region of Johannesburg