The urbanization of most of Africa is moving fast forward, especially South of the Sahara. It is estimated that in 1900, about 89% of inhabitants lived from the primary occupations of farming, hunting and gathering, cattle nomadism, and fishing (Aase, 2003:1) meaning that 11% or less were urban. At the start of the independence period in 1957, 14.7% of Africa's inhabitants were urban, in 2000 had it risen to 37.2% and it is expected to rise to 49.3% in 2015, in effect 3.76% to 3.35% per year (UN, 2002). In sub-Saharan Africa in 1960 "only one city, Johannesburg, had a population of one million;...in 2009, there were fifty-two cities with such large populations." The Nigerian city of Lagos that in 1963 had 665,000 inhabitants (Rakodi, 1997) and 8.7 million in 2000 is expected to become the world's 11th biggest city by 2015 with 16 million inhabitants (UN, 2002).

Pre-colonial times

The process of urbanization required some initial conditions to be met before the process could begin. The purpose of towns was to support the labor of those who were not in agriculture, whether that be craftsmen, priests, traders, landlords, etc. According to Catherine Coquery-Vidrovitch, there are three conditions needed for urbanization to begin. First, there must be a food surplus to feed those who are not employed in agriculture. Second, there must be a ruling class that facilitates the movement of this food surplus from those who create it to those living within the city. Finally, there must be merchants and traders to supply this new working class with the materials necessary to accomplish their work. The structure of many African cities is quite different from the normal western city, mainly in sub-Saharan Africa but also in the Nile Valley The structure of the city did not include stone structures, and if they did, it was sparsely in the city center. This kind of city was called a "Giant Village," and it allowed the city to move when resources became depleted. Most of the structures built were made of wattle and daub, often even the chiefs quarters. These "Giant Village's" were characterized by very low population density and very large cities in area; at most, they had up to 50,000 people living in these cities.

In pre-colonial Africa, young men would often challenge the authority of their elders. This could oftentimes create tension between the ethnic groups and a constant struggle for who has authority over one another. Constant struggle in this manner doesn't allow for growth and innovation.Grinker R. R. Lubkemann S. C. & Steiner C. B. (2010). Perspectives on africa : a reader in culture history and representation (2nd ed.). Wiley-Blackwell.

Nile Valley

The earliest known cities of Africa emerged around the Nile Valley. Kerma, in present-day Sudan, is the oldest urban centers in Africa, dating back to at least 2500 BCE. Excavations by Charles Bonnet revealed a city with planned streets, elite residences, workshops, and the massive Western Deffufa, one of the oldest standing mudbrick temples in the world, indicating complex religious, political, and administrative organization.

Alexandria was founded in Egypt in 331 BC and is famous for the lighthouse Pharos, for a legendary library, and for the martyrdom of Hypatia of Alexandria. While more Ancient Greek papyri were preserved in the sands of Egypt than anywhere else in the ancient world, relatively few from Alexandria still remain. In Upper Nile Valley, Meroë (present-day Sudan) was one of the major cities in the Kingdom of Kush. For several centuries after the sacking of Napata in 590 BC, the Meroitic kingdom developed independently of Egypt, reaching its height in the 2nd and 3rd centuries BC. Meroë advanced in iron technology, and building construction dates back to at least 900 BC. Meroë was a great center of agriculture at its height.

Africa north of the Sahara has long had political and cultural contact with people outside of Africa. It is physically separated from the rest of the continent as well, making for quite a difference between the people in North Africa and the rest of the continent. North Africa and the Nile Valley urbanized rapidly compared to the rest of Africa, and this exposure to other cultures had a large impact on growth.

West Africa

Between AD 700 to 1600, cities in the West African savanna emerged from the trans-Saharan trade. Some of the more prominent were Kumbi Saleh, Timbuktu, Djenné and Gao. Arabic scholars like Ibn Khaldun have been a very important source of historical accounts from this area and period. Gold mining, iron technology, pottery making and textile production were the important technologies. In the commercial and capital center of Ghana Empire (not present Ghana) Kumbi Saleh an elaborate economic system including taxation was developed. The growth and strength of the 3 kingdoms of Mali, Ghana, and Songhai can be attributed to their fertile and easily farmable environment. This allowed them to create a surplus of rice, as well as their long-distance trade of salt and gold.

In the West African forest region, cities developed among the Yoruba, Fulani, Hausa people as well as in the Ashanti Empire and Benin kingdom. As well as being commercial and political centers they worked as spiritual centers. One of the largest cities in the region was Old Oyo, a "Great Village" with an area of 5252.5 ha, and an estimated population of 100,000.

Central Africa

In the central African equatorial region cities could be found in what is today Congo, DR Congo, Angola, Zambia, Rwanda and Burundi. In what is now DR Congo, Musumba was the capital city of Lunda. In the Mangbetu Kingdom districts changed their structure to fit the need of the kingdom. There is evidence of equal dispersion of villages of equal sizes transforming into larger clumped villages in times of war or when trade route were diverted through the village and then reverted when those times have passed back to equally dispersed villages of equal sizes.

Important cities:

M'banza-Kongo, capital of the Kongo Empire Ryamurari, capital of the Ndorwa kingdom (Rwanda) Kiguba, capital of the Buganda kingdom (Uganda)

East Africa The Ethiopian Empire amassed a large number of trade networks and acquired western goods as a result. Although Ethiopia had these successful trade networks, limits to urbanization were closely connected to societal limits on surplus accumulation. Cities were forced to remain small, with an average population typically not exceeding 2000 to 4000 inhabitants.

Axum, capital of the Ethiopian kingdom lasted from the first century AD until about the 10th century AD. It had an extensive trade network with the Roman Mediterranean, south Arabia and India, trading ivory, precious metals, clothing and spices. Axumian stone artwork (monoliths has been preserved, and bear proof of their advances in quarrying, stone carving, terracing, building construction and irrigation.

Coastal East Africa The lack of fertile ground in East Africa is made up for with its vast access to the sea and its resources, with limited available land cities had to be compact and with the creation of two storied houses it shows evidence of a more scarce land market than other regions.

In this region a Swahili Angli Moslemic culture emerged.

Important cities: Barawa Gedi (present Kenya) Kilwa (present Tanzania) Mafia Malindi (present Kenya) Mogadishu Mombasa (present Kenya) Mozambique Pate Pemba Quelimane Sofala Zanzibar (present Tanzania) Many of these cities were likely closely interrelated with one another, especially when looking at historical Swahili culture villages and settlements.

Technological developments included coin minting, copper works, building craftsmanship, boat building, cotton textile. External trade was very active and important with Asia and Arabia.

Southern Africa

Stone-built ruins are numerous and widely spread in southern Africa. Zimbabwe testifies to an urban Shona civilization that left many ruins, even showing evidence for complex agriculture. Many of these structures were cattle enclosures carbon dated all the way back to 1000 AD, the number of these structures suggested a very dense population. Great Zimbabwe is one of the more famous pre-colonial cities of Africa. Its Great Enclosure is considered the largest single prehistoric structure in Africa. The earliest inhabitants of the Angola area are believed to have been Khoisan hunter-gatherers whose remains date back to the Old Stone Age.

See Also: List of African territories and states by date of colonization List of pre-colonial African cities

Colonial times

With the Berlin Conference of 1884–85 as a foundation, Africa was apportioned among the European powers. In 1914 only Ethiopia and Liberia were left as independent states, the remainder of the continent was under British, French, Portuguese, German, Belgian, Italian or Spanish control. It was the interest of these powers that governed the borders. The continent had almost no urban population and the colonial powers had not started to invest much in its «pieces» (Hernæs, 2003a). A good example is Northern Nigeria Protectorate that in 1900 had a budget of £100,000, a military force of 2000 Hausa-soldiers and 120 British Army officers. With this they were to govern an enormous area with a population of about 10 million people.

The economic and administrative politics had the greatest effect on urbanization. The important export products cash crops (including cotton, maize, tobacco, sugar, coffee, tea, palm oil, and groundnuts) and minerals had to be transported to the harbour towns for export. For this railway transport was needed, and to run the colony administration and personnel was needed. The central administration was often placed in harbour town, but there was not developed any network of small and middle-sized cities (Aase, 2003:3).

New cities were placed in an existing settlement or at a completely new site. Completely new cities were especially developed in the copper zone to house the mine workers. Examples include Johannesburg and Kimberley in South Africa, Ndola and Kitwe in Zambia and Lubumbashi in DR Congo.

A strong centralised political system was also important in the development of early urban centres for example in the Ndebele Kingdom under Mzilikazi and later on Lobengula

Some cities were used and some were ignored. Close to the main lines of transportation the cities grew, while towns that were ignored by transportation and administration in effect disappeared, as for example Kukawa and Dahomey.

It was in the cities of transportation and administration that contact with government and commerce was possible. As a consequence it was invested in these cities leading to the need of workforce. The commercial politics of raw inputs exporting to finance the colony and develop Africa governed the way what cities that should grow.

At the same time the colonial powers became aware of the problems that urbanization brought with it. The rural-urban migration pulled labour away from the countryside where the important export products were made. The Africans usually lived in small spaces and under poor sanitary conditions. They were therefore prone to illnesses like malaria. One of the colonial governments' response was to separate Europeans, Asians and Africans from each other and establish influx control laws. In South Africa this resulted in the official policy of apartheid from 1950. This was also a policy that was especially common in settler cities like Harare, Lusaka and Nairobi.

With the Great Depression in the 1930s, prices of African export products dropped. This in turn led to an economic downturn and unemployment. The mining workforce before the depression had been mostly temporary or seasonal, often also forced labour. The workers therefore lived in mining cities away from home and their families in the countryside.