Johannesburg World Cities Research Network. In 2011, the population of the city of Johannesburg was 4,434,827, making it the most populous city in South Africa. In the same year, the population of Johannesburg's urban agglomeration was put at 7,860,781. The land area of the municipal city () is large in comparison with those of other major cities, resulting in a moderate population density of . The city was established in 1886 following the discovery of gold on what had been a farm. The city is commonly interpreted as the modern day El Dorado due to the extremely large gold deposit found
Johannesburg Internet Exchange beyond its initial base of operations to additional locations within the metropolitan area. Johannesburg Internet Exchange JINX (Johannesburg Internet Exchange), located at Johannesburg, South Africa, is an Internet Exchange Point (IXP) in South Africa. It is run by INX-ZA, which is an autonomous arm of the Internet Service Providers' Association of South Africa (ISPA). JINX started operating in 1996. The amount of traffic processed by the JINX has been steadily growing, and growth has been exponential in the second half of the 2000s (decade), with, for example, 450 Mbps peak-hour load in 2008 that almost doubled to 800 Mbit/s in