Inside the megacity surge: Global cities that have more than 15 million residents
The world is undergoing an unprecedented urban transformation, with several cities now exceeding 15 million residents. Megacities such as Istanbul, Lagos, Guangzhou, Shenzhen, Beijing, Karachi, Delhi, and Shanghai are experiencing the most moves. The Cities in Numbers
According to the graphic:
- Istanbul has about 15.7 million residents.
- Lagos and Guangzhou each stand at 16 million.
- Shenzhen follows with 17.5 million.
- Beijing is estimated at 19 million.
- Karachi rises to 20.3 million.
- Delhi comes in at 20.6 million.
- Shanghai leads the group with 21.9 million.
While these figures illustrate the incredible size of modern megacities, recent population data shows that the actual numbers are often even larger..
The global significance of megacities
Megacities are more than just population centres. They are hubs of economic power, cultural exchange, and innovation. Yet, their rapid expansion also creates pressing challenges:
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- Infrastructure pressure: Roads, public transport, and utilities are often stretched beyond capacity.
- Housing and sanitation: Urban sprawl and informal settlements put enormous strain on resources.
- Climate resilience: Rising populations in coastal megacities like Shanghai and Lagos amplify climate-related risks.
- Sustainability: Governments must focus on equitable development, resilient infrastructure, and affordable housing to ensure long-term urban survival.
