7,860,781 is the population of the urban region of Johannesburg . 2,900/km 2  (7,400/sq mi) is the density of people in Johannesburg . The population of the metro region is 9,616,000 . 957,441 is the population of Johannesburg . The density of  residents in  the urban region of Johannesburg is 2,300/km 2  (6,100/sq mi)
There are 6100 people per sq mi in the urban region of Johannesburg