|City motto: Unity in Development|
|Location of Johannesburg|
- % water
| 1,644 km² |
- Total (2001)
|Ranked 96th |
|Time zone||SAST (UTC+2)|
Johannesburg, also known as eGoli (place of gold), is the largest and most populous city in South Africa. The city is affectionately known as "Jo'burg", "Jozi" and "JHB" by South Africans. Johannesburg is the provincial capital of Gauteng, the wealthiest province in South Africa, and fourth largest economy in Sub-Sahara Africa. The city is one of the 40 largest metropolitan areas in the world, and Africa's only officially designated global city (classified as a gamma world city). Whilst sometimes mistakenly assumed to be South Africa's capital city, Johannesburg does not form one of South Africa's three official capital cities. Johannesburg does however house the Constitutional Court of South Africa|South African Constitutional Court, the highest court of South Africa.
Johannesburg is the site of a large-scale gold and diamond trade due to its location on the mineral-rich Witwatersrand range of hills. Johannesburg is also served by O.R. Tambo International Airport, the largest and busiest airport in Africa and a gateway for international air travel to and from the rest of Southern Africa.
According to the 2001 census, the population of the city is more than three million. Johannesburg's land area of 1,644 km² is very large when compared to other cities, resulting in a population density of only 1,962/km². The population of the Greater Johannesburg Metropolitan Area is almost eight million. Johannesburg also encompasses Soweto to the south west, a township which the apartheid government established to accommodate the large number of migrant workers.