Diaspora, migration & demographic change

The world's largest diaspora

India hosts the world's largest diaspora. The UN International Migrant Stock 2020 placed the Indian-origin overseas population at about 18 million, ahead of Mexico (11 million) and Russia. The Ministry of External Affairs (MEA) classifies the diaspora into Non-Resident Indians (NRIs, Indian citizens abroad) and Persons of Indian Origin (PIOs), the latter now subsumed under the Overseas Citizen of India (OCI) scheme created by the Citizenship (Amendment) Act, 2005. The Pravasi Bharatiya Divas, observed on 9 January since 2003, marks Mahatma Gandhi's 1915 return from South Africa and institutionalises diaspora engagement.

Historical waves

Diaspora formation occurred in distinct phases. The indentured labour migration (1834-1920) under the British 'girmitiya' system carried Indians to Mauritius, Fiji, Trinidad, Guyana, Suriname and South Africa after the abolition of slavery (Slavery Abolition Act, 1833). The system was abolished in 1917 following nationalist agitation led by Gokhale and Gandhi. A second wave saw traders and professionals move to East Africa and Southeast Asia. The post-1947 phase split into the skilled migration to the UK, USA, Canada and Australia (doctors, engineers, IT professionals after the US Immigration Act of 1965) and the labour migration to the Gulf following the 1973 oil boom.

Remittances and 'brain drain' versus 'brain gain'

India is the world's top remittance recipient. The World Bank's Migration and Development Brief recorded inflows of roughly USD 111 billion in 2022 and over USD 125 billion in 2023, exceeding FDI inflows and cushioning the current account. Remittances sustain household consumption in Kerala (the 'Gulf economy'), Punjab and Gujarat. The Kerala Migration Survey (Centre for Development Studies) has tracked this dependence since 1998.

The sociological debate moves from brain drain — the loss of trained professionals, costed by economists like Jagdish Bhagwati who proposed a 'brain drain tax' — to brain gain and brain circulation, where returnees and transnational networks transfer capital, skills and entrepreneurship (Silicon Valley's Indian-origin founders; the role of the diaspora in the 2008 Indo-US nuclear deal lobbying). The diaspora also exercises political influence and, occasionally, exports communal and regionalist tensions (Khalistan mobilisation abroad).

Governance architecture

The erstwhile Ministry of Overseas Indian Affairs (2004) was merged into the MEA in 2016. Worker protection rests on the Emigration Act, 1983, the eMigrate portal, and the Pravasi Bharatiya Bima Yojana insurance scheme. The Madhav Das Nair / High Level Committee on the Indian Diaspora (L.M. Singhvi, 2001) shaped policy and recommended PIO/OCI cards. Vulnerabilities of low-wage Gulf workers — the kafala sponsorship system, contract substitution, and crises such as the 2020 COVID-19 repatriation under Vande Bharat Mission — remain live policy concerns.

Internal migration: the larger story

Internal migration dwarfs international flows. Census 2011 counted 45.6 crore internal migrants — about 37% of the population — overwhelmingly driven by marriage (women) and work/employment (men). The Economic Survey 2016-17 used railway data to estimate inter-state migration at about 9 million annually between 2011 and 2016. Dominant corridors run from Uttar Pradesh and Bihar towards Delhi, Maharashtra, Gujarat and Punjab. The 2020 COVID-19 lockdown reverse-migration exposed the invisibility of circular and seasonal migrants, prompting the One Nation One Ration Card scheme and the (still pending) operationalisation of the Inter-State Migrant Workmen Act, 1979, now folded into the Code on Social Security, 2020.

Demographic transition and the dividend

India is mid-way through its demographic transition (declining mortality followed by declining fertility). The National Family Health Survey-5 (2019-21) recorded the Total Fertility Rate at 2.0 — below the replacement level of 2.1 for the first time. India became the world's most populous country in April 2023, overtaking China per UNFPA estimates. The median age is about 28 years, opening a demographic dividend window the UNFPA projects until roughly 2055.

Why this matters for the exam

This topic is core to GS-1 (Indian Society) — 'population and associated issues', 'effects of globalisation', and 'urbanisation' — and overlaps GS-2 (diaspora, governance) and GS-3 (remittances, growth). PYQs are recurrent: 2016 asked to discuss the changes in the pattern of land use; 2020 asked about the impact of the pandemic on migrant labour; UPSC has repeatedly asked whether India's demographic dividend can be realised. Examiners reward candidates who distinguish internal from international migration, cite NFHS-5 TFR (2.0), the 2023 most-populous milestone, the USD 111-125 billion remittance figures, and link demography to employment, skilling (Skill India), female labour-force participation, and ageing.

The dividend's preconditions and the looming ageing

A dividend is a window, not an entitlement. Realisation requires jobs, health and education — China and the East Asian 'tigers' converted youthful populations into growth through manufacturing and human capital. India's risk is a 'demographic disaster' if the low female labour-force participation rate (PLFS data), jobless growth and skill gaps persist. Simultaneously, southern states (Kerala, Tamil Nadu) face ageing with TFR well below replacement, raising the politically charged question of delimitation and fiscal transfers (15th Finance Commission's use of 2011 population). The contrast between a young north and an ageing south is the defining demographic fault line for 21st-century India.