Ibadan

Ibadan is a massive and significant urban center in southwestern Nigeria. It serves as the capital of Oyo State. The city is one of the most populous locations in Nigeria. Its metropolitan area holds approximately 4.3 million people.

By land area, it is the largest city in the country. It covers about 3,080 square kilometers. This vast size makes it a major hub for commerce and research. It also acts as a vital transit point between the coast and the inland regions.

The geography of Ibadan is defined by its tropical forest zone location. It sits near the boundary of the derived savanna. The landscape features hills with elevations between 160 and 275 meters. A prominent north-south ridge crosses the central part of the city.

Water is a defining feature of the terrain. Five rivers naturally drain the area. These include the Ona, Ogbere, Ogunpa, Kudeti, and Osun rivers. The Ogunpa River is a third-order stream. It has a channel length of 12.76 km and a catchment area of 54.92 km2.

Climate in the region follows a tropical wet and dry pattern. This is known as the Köppen Aw classification. The wet season lasts from March through October. It actually features two distinct peaks in rainfall during June and September. There is a brief lull in rain during August. The dry season runs from November to February. During this time, the city experiences the West African harmattan. The mean daily temperature stays relatively constant throughout the year. The relative humidity averages around 74.55%.

Ibadan has a unique and martial history. The name comes from "Eba-Odan," meaning "by the edge of the meadow." It was founded around 1829 during a period of turmoil in Yorubaland. Local historians say Lagelu founded the city. It was originally intended as a war camp for warriors. Its hilly forest location provided strategic defense.

Because of its military strength, it was nicknamed "idi-Ibon" or "gun base." Unlike other Yoruba cities, it functioned as a military republic. It was administered by four chiefs. Three offices were open to all freeborn males. One office was reserved for female residents.

The city's importance grew through trade and colonial administration. In 1893, it became a British Protectorate. This followed a treaty signed by the Baale of Ibadan, Fijabi. The city became a major trade center for cocoa and rubber. This attracted many traders from Lagos, Ijebu-Ode, and Kano.

Because of its central location, it became the headquarters for the Western Provinces in 1939. At the time of Nigeria's independence in 1960, Ibadan was the largest city in the country. It was also the second-most populous city in Africa, trailing only Cairo.

Urban growth has transformed the landscape significantly. In 1952, the city area was about 103.8 km2. By the year 2000, it was estimated to cover 400 km2. Much of this growth happened along major roads. The Ibadan-Lagos expressway caused sprawl to the east and north. The Eleiyele expressway drove growth to the west.

Today, the city is a diverse community. It is home to the Yoruba people and many others. These include Igbo, Hausa, Edo, Ebira, Igede, Igala, and Ibibio communities.

Modern Ibadan is a leader in several contemporary fields. It is ranked as one of the fastest-growing cities in sub-Saharan Africa. The UN Human Settlements Program noted this in 2022. The city is also a rising tech hub. It ranks fifth in West Africa in the tech startups index.

In 2016, it joined the UNESCO Global Network of Learning Cities. The Dugbe district remains the commercial heart. It houses many banks and the regional office of the Central Bank of Nigeria.

The city continues to be a vital center for education and innovation.