Urbanisation Processes in Detail
Urbanisation is one of the most significant geographical processes of the 21st century. By 2050, an estimated 68% of the world's population will live in urban areas (UN, 2018). This lesson examines the full spectrum of urbanisation processes — from initial rural-to-urban migration through to counter-urbanisation and re-urbanisation — and explores the concepts of megacities, world city hierarchies, and the primate city rule.
Defining Urbanisation
Urbanisation is the increase in the proportion of a country's population living in urban areas. It is measured as a percentage and is driven by two main processes:
- Rural-to-urban migration — people moving from countryside to cities in search of employment, education, healthcare, and social opportunities (pull factors) or fleeing poverty, land degradation, conflict, and lack of services (push factors)
- Natural increase within cities — urban populations tend to be younger, resulting in higher birth rates and lower death rates compared to rural areas
Rates of Urbanisation
| Region | Urban Population (%) 2020 | Projected 2050 | Rate of Change |
|---|
| North America | 82% | 89% | Slow (already highly urbanised) |
| Europe | 75% | 84% | Slow |
| Latin America | 81% | 88% | Slow |
| Asia | 51% | 66% | Rapid |
| Africa | 43% | 59% | Very rapid |
The fastest urbanisation is occurring in Sub-Saharan Africa and South Asia, where rural-to-urban migration and natural increase are both high.
Suburbanisation
Suburbanisation is the outward spread of the urban area, resulting in the growth of low-density residential developments on the urban fringe.
Causes
- Rising car ownership — enables commuting from suburbs to city-centre workplaces
- Improved transport infrastructure — motorways, ring roads, suburban railways
- Desire for more space — larger houses, gardens, quieter environments
- Decentralisation of employment — out-of-town business parks and retail centres
- Planning policies — new housing estates built on greenfield sites on the urban edge
- Perceived better quality of life — less pollution, lower crime, better schools
Consequences
Positive:
- Reduced overcrowding in inner cities
- Better living conditions for residents who move outward
- Economic activity spreads more evenly across the urban area
Negative:
- Urban sprawl — loss of agricultural land and green spaces
- Increased car dependency and carbon emissions
- Decline of inner-city areas as population and investment move outward
- Greater social segregation as wealthier groups move to suburbs
- Infrastructure costs of extending services to low-density areas
UK Case Study: Milton Keynes
Milton Keynes, designated as a new town in 1967, exemplifies planned suburbanisation:
- Grid-road system designed around the car
- Low-density housing with generous green spaces
- Population grew from 40,000 (1967) to over 230,000 (2021)
- Criticised for car dependency and lack of urban character
Counter-Urbanisation
Counter-urbanisation is the movement of people from urban areas to rural areas, resulting in population growth in villages and small towns.
Causes
- Improvements in telecommunications — remote working enables people to live far from their workplace
- Retirement migration — older people move to rural areas for quality of life
- Perception of rural idyll — countryside seen as safer, quieter, more community-oriented
- High urban housing costs — cheaper property in rural areas
- Improved rural transport links — motorways and high-speed rail connect rural areas to cities
Consequences for Rural Areas
Positive:
- Increased demand supports local services (shops, schools, pubs)
- Investment in property renovation
- New skills and economic activity
Negative:
- House prices rise, pricing out local people (especially young families)
- Dormitory villages — commuters contribute little to local community life
- Demand for urban-style services (street lighting, broadband) changes rural character
- Conflict between newcomers and established residents over development, noise, farming practices
Case Study: The Cotswolds
The Cotswolds AONB has experienced significant counter-urbanisation:
- Average house prices 60% above the national average
- High proportion of second homes and holiday lets
- Young people priced out, leading to ageing population
- Villages like Bourton-on-the-Water attract over 1 million tourists annually, creating tension between residents and visitors
Re-Urbanisation
Re-urbanisation is the movement of people back into city centres, reversing previous decline. It is closely linked to gentrification (covered in Lesson 4) but is a broader process.
Causes
- Young professionals attracted to urban lifestyle — restaurants, nightlife, cultural facilities
- Brownfield redevelopment — conversion of former industrial sites into residential and mixed-use developments
- Government urban regeneration policies — investment in inner-city infrastructure
- Changing household structures — more single-person households and childless couples who prefer city living
- Sustainability agendas — promoting compact, walkable urban living over suburban sprawl
Case Study: Manchester City Centre
Manchester's city centre population grew from approximately 900 in 2001 to over 70,000 by 2021:
- Conversion of former warehouses and mills into apartments
- Major developments including Spinningfields, NOMA, and First Street
- Attraction of MediaCityUK to nearby Salford Quays
- Driven by young professionals, students, and the creative industries
Urban Sprawl and Edge Cities
Urban Sprawl