Human Geography: Population and Urbanization

🟢 Lite — Quick Review (1h–1d)

Rapid summary for last-minute revision before your exam.

Population Geography — Key Facts for BPSC Examination

Demographic Concepts:

Concept	Formula	Interpretation
Birth Rate	Births per 1000 population	Indicates population growth
Death Rate	Deaths per 1000 population	Indicates population decline
Natural Increase	Birth Rate - Death Rate	Growth without migration
TFR	Children per woman	Replacement = 2.1

DTM Stages:

Stage	BR	DR	Growth	Example
1 High fluctuation	High, variable	High, variable	Slow	Pre-industrial
2 Early expanding	High (~35)	Falling (~15)	Rapid	India 1950-70, Afghanistan
3 Late expanding	Falling (~25)	Lower (~10)	Moderate	India now, Bangladesh
4 Stationary	Low (~15)	Low (~15)	Zero/slow	Japan, Germany
5 Declining	Very low (~10)	Low or rising	Negative	Russia, Italy

⚡ BPSC Tip: India is currently in Stage 3 of DTM — both birth and death rates are declining but BR remains higher than DR, resulting in continued population growth (though at decreasing rate)!

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🟡 Standard — Regular Study (2d–2mo)

Standard content for students with a few days to months.

Human Geography — BPSC Study Guide

Population Distribution and Growth

World Population Milestones:

Year	Population	Time to add 1 billion
1804	1 billion	—
1927	2 billion	123 years
1960	3 billion	33 years
1974	4 billion	14 years
1987	5 billion	13 years
1999	6 billion	12 years
2011	7 billion	12 years
2022	8 billion	11 years

Population Distribution:

Region	Share of World Pop	Density
Asia	59%	High
Africa	17%	Moderate
Europe	10%	Moderate
Latin America	8%	Moderate
N America	5%	Low
Oceania	1%	Low

Factors Affecting Population Distribution:

Factor	Favorable	Unfavorable
Physical	Plains, fertile soil, moderate climate	Mountains, deserts, polar regions
Economic	Industrial areas, cities	Remote, resource-poor areas
Historical	Long-settled areas	Recently colonized regions

India’s Population Distribution (Census 2011):

State/UT	Population	Density
Uttar Pradesh	199 million	828/km²
Maharashtra	112 million	365/km²
Bihar	104 million	1106/km²
West Bengal	91 million	1029/km²
Tamil Nadu	72 million	555/km²
Rajasthan	69 million	201/km²

Bihar Demographics:

• Population: 10.4 crore (2011)
• Decadal growth: 25.4% (2001-11)
• Sex ratio: 918 females per 1000 males
• Literacy: 63.8% (47% in 2001)
• Urbanization: 11.3% (very low)

Population Theories

Malthusian Theory:

• Population grows geometrically (1→2→4→8)
• Food supply grows arithmetically (1→2→3→4)
• Results in check to population (famine, disease, war)
• Criticized: Technology has increased food production

Neo-Malthusian: Same but emphasizes resource limits and environmental concerns

Marxist Perspective:

• Population problems stem from capitalism
• Solutions through social reform, not population control

Demographic Transition Theory:

• Modernization leads to declining mortality then fertility
• Population stabilizes in stage 4-5
• Driven by economic development, education, healthcare

Correlations with Development:

Indicator	High TFR countries	Low TFR countries
GDP per capita	<$2,000	>$25,000
Maternal mortality	High	Low
Female literacy	Low	High
Urbanization	Low	High
Contraceptive use	<20%	>70%

⚡ BPSC PYQ: “Explain the demographic transition model with reference to India’s population scenario” Answer: India is in Stage 3 of demographic transition — death rates have fallen sharply due to improved healthcare, while birth rates remain relatively high due to cultural preferences, literacy gaps, and youth demographics. The result is continued population growth. Government initiatives like family planning programs have helped slow the transition.

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🔴 Extended — Deep Study (3mo+)

Comprehensive coverage for students on a longer study timeline.

Human Geography — Comprehensive BPSC Notes

Migration Patterns

Migration Types:

Type	Definition	Examples
Internal	Within country	Rural-urban, intra-state
International	Between countries	Brain drain, guest workers
Voluntary	By choice	Employment, marriage
Forced	Not by choice	Refugees, displacement
Temporary	Short-term	Seasonal, commuting
Permanent	Long-term/relocation	Settlement

Push-Pull Factors:

Push Factors	Pull Factors
Unemployment	Jobs, higher wages
Conflict/war	Safety, peace
Natural disasters	Better services
Landlessness	Land ownership
Poor services	Healthcare, education
Environmental degradation	Environmental quality

Migration and Development:

Issue	Impact
Rural-urban migration	Urban growth, slums, labor for industry
International brain drain	Loss of skilled workforce
Remittances	Foreign exchange, poverty reduction
Brain gain	Return migration with skills

India’s Internal Migration:

• Rural to urban: Major trend
• Inter-state: Bihari workers across India (construction, services)
• Seasonal: Agricultural labor migration
• Nomadic: Traditional pastoral movements

Census Definitions:

• Migrant: Person whose place of last residence differs from current residence
• In-migrant: Into a place
• Out-migrant: From a place

Urbanization

Urbanization Stages (by % urban):

Stage	Urban %	Characteristics
Pre-industrial	<20%	Agricultural dominance, few towns
Early urbanization	20-40%	Industrial growth, rural-urban migration
Urbanization	40-60%	City growth, infrastructure pressure
Suburbanization	60-80%	Counter-urbanization begins
Post-urbanization	>80%	Urban-rural continuum

World Urbanization:

Country Type	Urban %	Examples
Developed	>80%	Japan, UK, USA
Developing	~55% average	India, Brazil, China
Least developed	~35%	Sub-Saharan Africa

India’s Urbanization:

• 2011 Census: 31.1% urban
• 2022 estimate: ~36%
• Projected 2030: ~40%
• 8 mega cities (>10 million): Delhi, Mumbai, Kolkata, Chennai, Bangalore, Hyderabad, Ahmedabad, Pune

Urban Challenges:

Challenge	Impact	Solution
Housing shortage	Slums, inadequate shelter	Affordable housing programs
Traffic congestion	Pollution, time loss	Public transport, ring roads
Water scarcity	Limited supply	Rainwater harvesting, recycling
Waste management	Pollution, health hazards	Segregation, recycling
Informal settlements	Poverty, vulnerability	Upgradation programs

Smart Cities Mission (India, 2015):

• 100 cities selected
• Focus: Core infrastructure, IT connectivity, governance
• Key projects: Smart cards, Wi-Fi zones, solar power, bus rapid transit

Population Composition

Age Structure:

Category	Young (0-14)	Working Age (15-59)	Elderly (60+)
Growing pop	High %	Low %	Low %
Stable pop	Moderate	High	Moderate
Aging pop	Low	Moderate	High

Population Pyramid Types:

Shape	Type	Country Example
Wide base, triangular	Expanding (young pop)	Nigeria, Afghanistan
Columnar, bell-shaped	Stationary	India, Brazil
Base narrower than body	Constrictive	China, Russia
Top-heavy	Diminishing	Japan, Germany

Sex Ratio:

• Global: 101 males per 100 females
• India: 943 (2011) — declining trend
• Reasons: Female infanticide, gender discrimination, dowry system
• States with poor ratio: Haryana (879), Punjab (895), UP (912)
• States with good ratio: Kerala (1084), Tamil Nadu (996)

Literacy Rates India (2011 Census):

• National average: 74.04%
• Male: 82.14%
• Female: 65.46%
• Gap narrowing but disparities remain

Population Policies

India’s Population Policy:

Initiative	Year	Key Features
Family planning program	1952	First in world
National Population Policy	2000	Population stabilization by 2045
Mission Parivar Vikas	2017	7 high-focus states

Target TFR:

• Replacement level: 2.1
• National goal: 2.0 by 2025
• State targets vary (Kerala achieved, Bihar ~3.0)

China’s One-Child Policy (1979-2015):

• Success: Reduced births by 400 million (estimated)
• Problems: Aging population, gender imbalance
• Changed to Two-Child Policy (2015), then Three-Child (2021)

⚡ BPSC Strategy: Population geography frequently combines with planning and development questions. Bihar’s high population density and low urbanization are important — focus on migration to other states, sex ratio imbalance, and literacy disparities.

⚡ Common BPSC Questions:

1. “Discuss the demographic transition model with reference to India” (15 marks)
2. “Explain the spatial distribution of population in India with influencing factors” (12 marks)
3. “Describe the challenges of urbanization in India” (10 marks)
4. “Analyze the population policies of India and China” (12 marks)

⚡ Bihar-specific Focus: Bihar’s population growth (25.4% decadal), high density (1106/km²), low urbanization (11.3%), and inter-state labor migration are critical. Sex ratio (918) is below national average — understanding causes and consequences is essential.

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