The highest elevation of Johannesburg is 425 m (1,394 ft) . The density of  inhabitents in  the metro region of Johannesburg is 6,600/km 2  (17,000/sq mi) . The postal code of the city is 1100 . The city province is Cebu (geographically only) . The lowest elevation of Johannesburg is 380 m  . Area : 993.5 km2 (383.6 sq mi) is the area of the urban region of Johannesburg . The density of  inhabitents in  the urban region of Johannesburg is 3,423/km 2  (8,870/sq mi) . Johannesburg is named for James W. Denver . The demonym of the city Johannesburg is Guayaquilean . The city water area is 3.73 sq mi (9.67 km 2 ) . 700/km 2  (1,800/sq mi) is the density of inhabitents in Johannesburg . 26°10′S 28°18′E﻿ / ﻿26.167°S 28.300°E are the coordinates of the city. . Johannesburg is located in Flathead County & Glacier County, Montana, United States . +55 (41) is the area code of Johannesburg . On November 7, 1861, as Denver City, C.T. the city was incorporated . Johannesburg is at an elevation of 726 m . The metro region has 4,005,015 population . The mayor of Johannesburg is Pramila Pandey (BJP) . The area of the city is Area: 572 km2 (221 sq mi)
There are 7548 residents per sq km in the metro region of Johannesburg