The city was incorporated in November 7, 1861, as Denver City, C.T. . 26°10′S 28°18′E﻿ / ﻿26.167°S 28.300°E are the coordinates of the city. . The density of  inhabitents in  the metro region of Johannesburg is 6,600/km 2  (17,000/sq mi) . The city has the postal code 1100 . Area : 993.5 km2 (383.6 sq mi) is the area of the urban region of Johannesburg . The lowest elevation of Johannesburg is 380 m  . Johannesburg is at an elevation of 726 m . Pramila Pandey (BJP) is the mayor of Johannesburg .  The city area code is +55 (41) . 700/km 2  (1,800/sq mi) is the density of inhabitents in Johannesburg . 3,423/km 2  (8,870/sq mi) is the density of inhabitents in  the urban region of Johannesburg . Johannesburg is located in Flathead County & Glacier County, Montana, United States . The Johannesburg city highest elevation is 425 m (1,394 ft) . The area of the city is Area: 572 km2 (221 sq mi) . This city is named after James W. Denver . The population of the metro region is 4,005,015 . The city water area is 3.73 sq mi (9.67 km 2 ) . The demonym of the city Johannesburg is Guayaquilean . The province of the city Johannesburg is Cebu (geographically only)
There are 2621 residents per sq mi in Johannesburg