Lagos, Nigeria: Africa's Megacity in Full Throttle

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🌍 Lagos, Nigeria: Africa's Megacity in Full Throttle

If you want to understand what rapid urbanisation looks like in reality — the chaos, the opportunity, the inequality, the ingenuity, the sheer overwhelming scale of it — Lagos is the place to look. There is no city on Earth quite like it.

Lagos sits on the south-west coast of Nigeria, on a peninsula and network of islands jutting into the Atlantic Ocean along the Gulf of Guinea. At independence in 1960, the city had around 760,000 people. Today, official figures put the population at around 15 million, but unofficial estimates — accounting for the millions living in informal settlements who are never counted — reach 21 million or more. Lagos is almost certainly the largest city in Africa, and one of the fastest-growing cities anywhere on Earth.

The city is Nigeria's economic capital (the political capital is Abuja, 500 km to the north), its main port, and its cultural heartland. Nigeria is Africa's most populous country with over 220 million people, and Africa's largest economy by GDP. Lagos is the engine of all of that.

Why Lagos Grew So Fast — The Causes of Its Growth

Lagos's extraordinary growth is the product of several converging forces, all acting simultaneously:

Oil wealth concentrated economic activity in Lagos — Nigeria discovered major oil reserves in the Niger Delta in the late 1950s. The revenue from oil made Lagos the financial capital of the country, attracting investment, businesses, and government spending. Wealth begat more wealth. The port of Lagos became the entry point for imports across Nigeria, and the Lagos Stock Exchange became the largest in sub-Saharan Africa. Economic concentration attracted people.
Rural push from northern Nigeria — The north of Nigeria has experienced severe drought, desertification (the advancing Sahara), mechanisation of agriculture, and since 2009, the catastrophic Boko Haram insurgency. All of these push factors have driven millions of northerners southward, and Lagos — the obvious economic destination — has received a huge share of this internal migration.
High natural increase within Lagos — Nigeria has a birth rate of approximately 38–40 births per 1,000 people per year — one of the highest in the world. Even without new arrivals, a city of millions with a birth rate that high will grow explosively from within. The young age structure of Lagos's population (a legacy of earlier waves of young migrants) amplifies this effect.
Post-independence infrastructure investment — After independence in 1960, Lagos received significant government investment in roads, ports, and industry. This made the city even more economically productive and attractive, reinforcing the migration pull.
The result: From 0.3 million in 1950 to potentially 21 million today — a 70-fold increase in 70 years. Lagos is the defining example of what happens when migration and natural increase accelerate together in a city that was never designed for this scale.

Quick Check: Explain two reasons why Lagos has grown so rapidly since 1950.

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