Rural-Urban Migration & Natural Increase
The Growth of Megacities
- A megacity is a city with a population of 10 million people or more
- There were just 3 megacities in 1970; today, there are 34 megacities and this number is set to grow to at least 40 by 2030
- Megacities grow as a result of rural-urban migration and natural increase
- The world has reached a point of hyper-urbanisation because since 2007 more than half of the world’s population live in urban areas
Megacities (2021)
- The main causes of rural-urban migration are categorised into urban pull factors and rural push factors
- The main urban pull factor is employment as TNCs usually locate in urban areas offering employment opportunities that do not exist in rural areas
- Other urban pull factors include better schools and healthcare
- The main rural push factor is poverty which is exacerbated by population growth and a lack of jobs
Social and Environmental Challenges of Rapid Urban Growth
- The continued growth of urban areas is inevitable which poses social and environmental challenges to these megacities
Social and Environmental Challenges
Social Challenges |
Environmental Challenges |
Insufficient affordable housing Limited accessibility to education and healthcare |
Water pollution from untreated sewage Air pollution from industry and vehicles Loss of farmland |
Exam Tip
Make sure you have examples of megacities and some specific details about at least one megacity to use in your exam.