Human and Social Geography of India
Overview
Human and Social Geography of India examines how people are distributed across the country, how population characteristics have changed over time, and the patterns of urbanisation and migration that shape modern India.
Understanding population geography is essential because it connects directly to economic planning, social welfare schemes, and policy questions that appear across General Studies. The 2011 Census remains the primary data source for Prelims, though aspirants must stay alert to provisional 2021 Census announcements and related government reports. Mastery here requires memorising key statistics while understanding underlying demographic concepts.
Key Concepts
- Population Distribution: India's population is unevenly spread—Uttar Pradesh alone holds over 16% of the national population. Distribution is influenced by terrain, climate, soil fertility, water availability, and economic opportunities.
- Population Density: Calculated as persons per square kilometre. India's average density (2011 Census) is 382 persons/km². Bihar has the highest density among major states (1,106/km²); Arunachal Pradesh has the lowest (17/km²).
- Population Growth: India's decadal growth rate declined from 21.5% (1991–2001) to 17.7% (2001–2011). The growth rate reflects the balance between birth rate, death rate, and net migration.
- Demographic Transition: India is in the late-expanding stage—declining death rates with slowly declining birth rates. Southern states have nearly reached replacement-level fertility (TFR ~2.1), while northern states like Bihar and UP lag behind.
- Population Composition: Includes age structure (working-age population 15–64 years), sex ratio (females per 1000 males), literacy rate, and rural-urban divide. India's sex ratio improved to 943 (2011) from 933 (2001).
- Scheduled Tribes (STs): Constitute 8.6% of India's population (2011). Concentrated in the "tribal belt" stretching from Gujarat to West Bengal and the northeastern states. Madhya Pradesh has the largest ST population in absolute numbers; Mizoram has the highest proportion.
- Urbanisation: The proportion of population living in urban areas rose from 27.8% (2001) to 31.2% (2011). Census towns and statutory towns together define urban India.
- Migration: Movement of people across regions, classified as internal (within India) or international; and by duration (permanent, temporary, seasonal). Marriage remains the dominant reason for female migration; employment dominates for males.
Formulas / Key Facts
| Indicator | 2011 Census Value | Key Detail |
|---|---|---|
| Total Population | 121.09 crore | 2nd most populous country |
| Decadal Growth Rate | 17.7% | Lowest since independence |
| Population Density | 382/km² | Delhi has highest among UTs (11,320/km²) |
| Sex Ratio (overall) | 943 | Kerala highest (1,084); Haryana lowest (879) |
| Child Sex Ratio (0–6 years) | 919 | Declined from 927 (2001)—a concern |
| Literacy Rate | 74.04% | Male 82.1%, Female 65.5% |
| Urban Population Share | 31.2% | Maharashtra most urbanised major state |
| ST Population | 10.43 crore (8.6%) | 705 Scheduled Tribes notified |
Density Formula: Population Density = Total Population ÷ Total Area (km²)
Sex Ratio Formula: Sex Ratio = (Female Population ÷ Male Population) × 1000
Decadal Growth Rate: [(Population in current census − Population in previous census) ÷ Population in previous census] × 100
Worked Examples
Example 1: Calculating Population Density
Problem: A state has a population of 7.26 crore and an area of 94,163 km². Find its density.
Solution:
- Population = 7,26,00,000
- Area = 94,163 km²
- Density = 7,26,00,000 ÷ 94,163 = 771 persons/km²
This matches West Bengal's density—one of the highest among major states.
Example 2: Identifying Tribal Concentration
Statement: "State X has the largest absolute ST population, but State Y has the highest proportion of STs."
Analysis:
- Madhya Pradesh: ~1.53 crore STs (largest absolute number)
- Mizoram: ~94% ST population (highest proportion)
- Lakshadweep: ~94.8% ST (highest among UTs)
Such distinctions between absolute and proportional values are frequently tested.
Example 3: Migration Classification
Question: A woman moves from rural Bihar to urban Delhi after marriage and later takes up employment. What type of migrant is she?
Answer: She is an inter-state rural-to-urban migrant. Her initial reason for migration is marriage (the most common reason for female migration), though she subsequently joins the workforce.
Common Mistakes
- Confusing sex ratio definitions → India uses females per 1000 males; UN uses males per 100 females. Always apply the Indian definition in UPSC context.
- Mixing absolute and proportional data for tribes → Students often say "Northeast has the most tribals" (true proportionally for some states) when Madhya Pradesh leads in absolute numbers.
- Assuming urbanisation equals industrialisation → Many Census towns emerge due to non-agricultural employment and population density, not industrial growth. Urbanisation can occur without factories.
- Ignoring child sex ratio trends → Overall sex ratio improved (933→943), but child sex ratio worsened (927→919). Questions often test this counter-intuitive divergence caused by sex-selective practices.
- Forgetting migration by marriage → Male migration is dominated by work; female migration is dominated by marriage. Exam questions frequently test this gender-wise distinction.
- Treating all northeastern states as identical → Assam has low ST proportion (~12%) despite being in the northeast; Mizoram and Nagaland exceed 85%. Generalisations fail here.
Quick Reference
- India 2011: 121 crore population; 17.7% decadal growth; 382/km² density; 943 sex ratio; 74% literacy.
- Highest density: Bihar (1,106/km²) among states; Delhi (11,320/km²) among UTs.
- Sex ratio extremes: Kerala (1,084) highest; Haryana (879) lowest among states.
- Tribal facts: 8.6% of population; MP largest absolute; Mizoram highest proportion; 705 notified tribes.
- Urbanisation: 31.2% urban (2011); Maharashtra most urbanised large state; three mega-cities (Mumbai, Delhi, Kolkata).
- Migration: Marriage dominates female migration; work/employment dominates male migration; UP and Bihar are major source states.