India: Population and Urbanisation

India's population story is one of extraordinary scale and rapid change. As the world's most populous country, India is experiencing massive urbanisation, with millions moving from rural areas to cities each year. This lesson examines India's population growth, demographic transition, the explosive growth of its megacities, the challenges of rapid urbanisation — including the reality of slums and informal settlements — and the government's response through urban planning initiatives.

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Population Growth

India's population has grown dramatically since independence and surpassed China in 2023 to become the world's most populous country.

Population Growth Timeline

Year	Population	Key Context
1947	~340 million	Independence from British rule
1960	~450 million	High birth and death rates (early demographic transition)
1980	~700 million	Death rates falling rapidly; birth rates still high
2000	~1.05 billion	Crossed 1 billion; growth rate beginning to slow
2010	~1.23 billion	Continued rapid growth; fertility rate declining
2023	~1.44 billion	Overtook China as world's most populous country
2050 (projected)	~1.67 billion	Expected to peak before 2065

Why Did India's Population Grow So Fast?

1. Falling death rates — improvements in healthcare, sanitation, and nutrition reduced death rates from ~27 per 1,000 (1950) to ~7 per 1,000 (2023)
2. Persistently high birth rates — cultural preference for larger families, lack of access to contraception, son preference, and women marrying young
3. Young population structure — a large proportion of the population is of childbearing age, creating demographic momentum
4. Improved life expectancy — from 36 years (1950) to 72 years (2023)

India's Demographic Transition

India is currently in Stage 3 of the demographic transition model, moving towards Stage 4:

graph LR
    A[Stage 1: High birth & death rates] --> B[Stage 2: Death rate falls rapidly]
    B --> C[Stage 3: Birth rate falls - INDIA IS HERE]
    C --> D[Stage 4: Low birth & death rates]
    D --> E[Stage 5: Death rate exceeds birth rate]

DTM Feature	India's Current Position
Birth rate	~17 per 1,000 (falling)
Death rate	~7 per 1,000 (low)
Natural increase	~1.0% per year
Total fertility rate	~2.0 (at replacement level nationally, but varies hugely by state)

Regional variation is dramatic:

• Bihar — TFR of 2.98 (still high; many women marry young, lower education)
• Kerala — TFR of 1.56 (below replacement level; high female literacy, later marriage)

The Demographic Dividend

India's young population presents both a challenge and an opportunity:

Aspect	Detail
Median age	28 years (compared to 38 in China, 44 in Japan)
Working-age population	Approximately 68% of the population is aged 15–64
The opportunity	If the economy can create enough jobs, this young workforce could drive enormous economic growth
The risk	If jobs are not available, a large unemployed youth population could create social instability
Window	India's demographic dividend is expected to last until approximately 2055

Exam Tip: The "demographic dividend" is a key concept. India has a potential economic advantage because of its large working-age population — but only if employment opportunities are created. Mentioning this shows understanding of the link between population and development.

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Urbanisation in India

India is urbanising rapidly, though it remains less urbanised than many other large economies.

Key Urbanisation Statistics

Indicator	Value
Urban population	~520 million (36% of total)
Rural population	~920 million (64% of total)
Annual urban growth rate	~2.3% per year
Number of cities with 1 million+ population	53
Number of megacities (10 million+)	5 (Delhi, Mumbai, Kolkata, Bangalore, Chennai)
Projected urban population by 2050	~877 million (50% of total)

Causes of Urbanisation

Factor	Detail
Rural-to-urban migration	People move to cities seeking jobs, higher wages, education, and better services
Natural increase	High birth rates in cities contribute to urban population growth
Reclassification	Towns grow and are reclassified as urban areas
Economic opportunity	Industrial and service-sector jobs are concentrated in cities
Push factors in rural areas	Agricultural poverty, lack of services, limited opportunities, drought
Pull factors in cities	Employment, healthcare, education, social mobility, entertainment

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India's Megacities

Mumbai

Mumbai (population ~21 million city, 25 million metro area) is India's financial and commercial capital:

Feature	Detail
Economy	Generates ~6% of India's GDP; home to the Bombay Stock Exchange; headquarters of major companies (Tata, Reliance)
Industry	Financial services, film (Bollywood), IT, textiles, port activities
Challenges	Extreme housing shortage; 42% of population lives in slums; traffic congestion; flooding during monsoon; water supply issues
Transport	Suburban railway carries 7.5 million passengers daily; new metro lines under construction

Delhi

Delhi (population ~32 million metro area, India's largest urban agglomeration):

Feature	Detail
Role	National capital; political and administrative centre
Economy	IT, telecommunications, government services, retail
Challenges	Severe air pollution (see Lesson 10); traffic congestion; water scarcity; rapid, often unplanned growth
Growth	Population has grown from 6 million (1981) to 32 million (2024)

Exam Tip: Know specific facts about at least one Indian megacity (Mumbai or Delhi). Examiners reward detailed knowledge of real places — population figures, economic functions, and specific challenges.

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Slums and Informal Settlements

One of the most significant consequences of rapid urbanisation in India is the growth of slums.

Key Statistics

• An estimated 65 million people live in slums in India (2023 data)
• In Mumbai, approximately 42% of the population lives in slums
• In Delhi, approximately 15% of the population lives in informal settlements (unauthorised colonies)
• Slums occupy only 6% of Mumbai's land area but house nearly half its population

Case Study: Dharavi, Mumbai

Dharavi is one of the largest and most famous slums in Asia:

Feature	Detail
Location	Central Mumbai, between two railway lines
Area	Just 2.1 km² (about 525 acres)
Population	Estimated 600,000–1 million people
Density	Over 300,000 people per km²
Economy	Thriving informal economy generating an estimated $1 billion annually; industries include recycling, pottery, leather, textiles, and food processing
Housing	Makeshift structures, often multi-storey; shared toilets (1 per 500+ people in some areas)
Water	Limited access to clean water; water available for only 2–3 hours per day in some areas
Sanitation	Inadequate sewage systems; open drains; high risk of waterborne disease
Community	Strong social networks; many small businesses; a sense of community despite difficult conditions

Why Do Slums Exist?

1. Housing shortage — cities cannot build housing fast enough to accommodate incoming migrants
2. Affordability — migrants cannot afford formal housing; slums provide cheap accommodation
3. Proximity to work — slums are often near industrial areas, construction sites, and commercial districts
4. Lack of planning — rapid, unplanned urban growth overwhelms municipal capacity
5. Land ownership — many slum dwellers occupy land they do not own, making formal development difficult

Problems in Slums

Problem	Detail
Overcrowding	Extremely high population density; families often share single rooms
Poor sanitation	Limited toilets and sewage systems; disease risk
Lack of clean water	Unreliable or contaminated water supply
Health risks	Waterborne diseases, respiratory problems from indoor cooking, limited healthcare access
Fire risk	Makeshift structures and narrow lanes make fires devastating and hard to fight
Insecurity	No legal tenure — slum dwellers can be evicted at any time
Limited education	Schools in slums are often overcrowded and under-resourced

Approaches to Slum Improvement