Population & associated issues

India as the World's Most Populous Nation

As of April 2023, the United Nations Population Fund (UNFPA) State of World Population report confirmed India had overtaken China to become the world's most populous country, crossing 1.428 billion. The last completed Census was 2011 (1.21 billion); the decadal Census due in 2021 was deferred and remains pending, making the 2011 figures, the Sample Registration System (SRS), and the National Family Health Surveys (NFHS) the operative data sources for the exam.

The Demographic Transition Model

India is traversing the classic four-stage demographic transition. Stage 1 (high birth, high death) characterised the colonial era up to 1921—called the 'great divide' year, after which mortality began falling. Stage 2 (high birth, falling death) drove the population explosion of 1951–1981 as famine control, vaccination and the eradication of smallpox (1977) and plague slashed death rates. India is now firmly in Stage 3: declining fertility with low mortality.

The decisive metric is the Total Fertility Rate (TFR). NFHS-5 (2019–21) recorded a national TFR of 2.0, below the replacement level of 2.1 for the first time. This is the single highest-yield fact for this lesson. States diverge sharply: Bihar (2.98) and Uttar Pradesh remain above replacement, while Tamil Nadu, Kerala, West Bengal and Andhra Pradesh fell below 2.1 years ago. This north–south divergence underpins debates on delimitation and federal resource-sharing.

Policy Architecture

India launched the world's first national family planning programme in 1952. The compulsory-sterilisation excesses during the Emergency (1975–77) discredited coercion and shaped a rights-based approach thereafter. The National Population Policy (NPP) 2000, framed under the M.S. Swaminathan committee recommendations, set the goal of population stabilisation by 2045 and made replacement-level fertility its immediate objective. Article 47 of the Constitution (Directive Principles) charges the State with raising the standard of living and improving public health. Population and family planning sit on the Concurrent List (Entry 20-A, inserted by the 42nd Amendment, 1976).

Sex Ratio and the Missing Girls

The Census 2011 sex ratio was 943 females per 1,000 males; the child sex ratio (0–6 years) was a more alarming 919, the lowest since independence, exposing prenatal sex selection in prosperous, low-fertility states such as Haryana and Punjab. The Pre-Conception and Pre-Natal Diagnostic Techniques (PCPNDT) Act, 1994 criminalises sex determination. Encouragingly, NFHS-5 reported 1,020 women per 1,000 men in the survey population—a sampling-based reading, not a census count, but a notable signal. Candidates must distinguish the sex ratio (all ages), the child sex ratio (0–6), and the sex ratio at birth.

The Demographic Dividend

India's median age is roughly 28 years (2023), against China's 39 and Japan's 49. The Economic Survey 2018–19 projected that India's working-age population (15–59) would peak around 2041, giving a window of demographic dividend—the growth bonus from a bulge of workers relative to dependants. The dividend is conditional, not automatic: it requires jobs, skilling and health. The Periodic Labour Force Survey (PLFS) and the low Female Labour Force Participation Rate (around 24% in 2018–19, rising in later PLFS rounds) reveal the dividend is being under-realised, particularly for women. Skill India (2015), the National Education Policy 2020 and the push for manufacturing under 'Make in India' are the instruments meant to convert demography into growth before the window closes around 2041.

Ageing and the Coming Inversion

The dividend's flip side is ageing. The India Ageing Report 2023 (UNFPA) projected that the share of those aged 60+ will double from about 10% in 2021 to 20% by 2050, exceeding the share of children under 15. Southern states will age first. This portends pressure on the Maintenance and Welfare of Parents and Senior Citizens Act, 2007, on pensions (the National Social Assistance Programme), and on geriatric healthcare. Examiners increasingly pair 'dividend' and 'ageing' to test whether candidates grasp that the two coexist regionally within one country.

Migration and Distribution

The Census 2011 enumerated 45.6 crore internal migrants (37% of the population), overwhelmingly women migrating for marriage, but with a decisive male labour stream from the Hindi-belt 'BIMARU' states to Maharashtra, Gujarat, Delhi and the south. The 2020 pandemic exodus of migrant workers exposed the invisibility of this workforce and accelerated reforms such as 'One Nation One Ration Card' and the e-Shram portal. Migration drives urbanisation: Census 2011 put the urban share at 31.16%, projected by the UN to cross 40% by 2030.

Why This Matters for the Exam

This topic is core to GS-1 Indian Society ('population and associated issues') and overlaps directly with GS-2 (delimitation, federalism, government schemes) and GS-3 (employment, economic growth). PYQs are recurrent: 2015 asked candidates to critically examine whether the demographic dividend can be realised; questions on declining child sex ratio, the south–north fertility gap and ageing recur in essay and GS-1 papers. The examiner rewards data anchoring—cite NFHS-5 TFR (2.0), Census 2011 sex ratio (943) and child sex ratio (919), the 2041 dividend peak and the 2050 ageing projection. The high-value analytical move is to argue that India faces dividend and ageing simultaneously across its regions, demanding differentiated, not uniform, policy. Avoid Malthusian alarmism; the data shows stabilisation, so frame 'population' as a quality-of-human-capital question, not a numbers crisis.