Urbanisation — Geography, 14–17 years
Why the share of people living in towns and cities changes over time. Geography, 14–17 years.
The basic idea
Urbanisation is the growth of the proportion of a population living in urban places. It is not simply a city becoming bigger; it describes a change in the balance between urban and rural living. A country can urbanise through new arrivals, natural increase, or villages being reclassified as towns.
Why does it happen?
Urbanisation accelerated when factories, offices and services became concentrated in towns and cities. People moved towards jobs, education, healthcare and transport, while farming needed fewer workers. The pattern is not automatic or identical everywhere: government policy, conflict, technology and environmental limits can change it.
Reading the change
In 2000, a country had 2 million urban residents out of 10 million people: 2 ÷ 10 × 100 = 20%. In 2025, it had 3.6 million urban residents out of 12 million: 3.6 ÷ 12 × 100 = 30%. Urbanisation rose by 10 percentage points, while the urban population itself grew by 1.6 million.
A tempting mistake
It is easy to confuse urbanisation with urban growth. A city can gain residents while the national urban share stays unchanged, if rural areas grow at the same rate. Conversely, the urban share can rise because rural people leave or boundaries change, even if the city itself does not add many jobs.
Where it matters
Urbanisation affects where governments build housing, railways, schools, drainage and waste systems. It also shapes questions about traffic, air quality, green space and access to work. Knowing the trend helps planners prepare, but it cannot tell them whether every resident benefits from city growth.
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