India’s Demographic Faultlines and Security Imperatives
India’s Demographic Faultlines and Security Imperatives
India’s demographic debate needs a fundamental rethink. For decades, population was discussed largely as a problem of numbers, with family planning and population control dominating policy discourse. That framework is increasingly inadequate. The country is now confronting a more complex challenge: the uneven distribution, composition, age structure, fertility and movement of its population, and the implications these changes carry for economic development, social cohesion and national security.
India’s total fertility rate has fallen to 2.0 children per woman, according to NFHS-5 (2019–21), below the conventional replacement level of 2.1. Yet this national average conceals considerable regional differences. While states such as Bihar and Uttar Pradesh retain relatively younger populations and higher fertility, several southern and western states are experiencing declining fertility and accelerating ageing. UNFPA projections suggest that people aged 60 and above could constitute roughly one-fifth of India’s population by 2050.
India is thus becoming a country of two demographic speeds. Younger, labour-surplus states will increasingly supply workers to economically advanced regions facing ageing and potential labour shortages. Internal migration, far from being a peripheral social phenomenon, will become an essential instrument of economic growth.
Fertility Transition
Differential fertility between religious communities is another subject that warrants serious study, without ideological exaggeration. Historical NFHS data analysed by Pew Research show that Muslim fertility declined from approximately 4.4 children per woman in 1992 to around 2.4 in 2019. The gap between Muslim and Hindu fertility has narrowed substantially. Fertility has declined across all major religious communities.
Female education, household income, urbanisation, age at marriage, access to contraception, employment opportunities and social security influence family size. Religion alone cannot explain demographic patterns. The answer lies in district-level evidence rather than sweeping generalisations.
Border districts, coastal settlements, transport corridors and areas surrounding critical installations deserve particular attention because population movements can affect land use, infrastructure, policing and security arrangements.
India’s long and porous borders make undocumented cross-border migration a legitimate governance and security concern. The Government’s 2024 decision to end the Free Movement Regime along the India–Myanmar border was explicitly linked to internal security and the preservation of the demographic structure of the north-eastern states. Border management must therefore incorporate reliable information on migration, citizenship, land ownership, settlement patterns, trafficking and cross-border criminal networks.
The same principle applies to India’s coastline. Ports, fishing communities, naval installations, industrial projects, islands and tourism centres form an interconnected maritime ecosystem. Migrant labour and expanding settlements can create pressure on local infrastructure, while poorly monitored landing points and trafficking networks can present genuine security vulnerabilities. A national Coastal Demographic and Security Atlas could help authorities identify these pressures.
India should also examine demographic changes around sensitive installations such as nuclear establishments, defence projects, missile facilities, major military stations and strategic industrial complexes. Rapid urbanisation around these facilities can complicate security perimeters.
A system of Strategic Installation Demographic Zones could map immediate security perimeters, adjoining habitation, commercial and transport ecosystems, and the wider district. Airports, railway corridors and national highways deserve similar scrutiny.
Urban Patterns
One of the more consequential aspects of demographic transformation is its impact on the character of urban neighbourhoods and patterns of property ownership. This raises questions about social cohesion, local security and the protection of property rights.
The concerns are particularly relevant to localities such as Malvani in Mumbai and Salunke Vihar in Pune. Malvani has witnessed significant demographic changes, accompanied by concerns about the out-migration of sections of the Hindu population. In Salunke Vihar, Pune, demographic transformation has raised concerns among residents, including defence personnel and retired members of the armed forces, about the changing character of the neighbourhood.
The issue is whether economic pressure, intimidation, organised property transactions or other forms of coercion are contributing to the displacement of established residents. Authorities must examine property registrations, sale deeds, land ownership patterns, tenancy records and changes in local population composition to establish the nature and extent of such developments.
Where residents are being pressured into selling property or leaving their neighbourhoods, the matter cannot be dismissed as an inevitable consequence of urbanisation. It raises serious questions of law and order, citizens’ security and the state’s responsibility.
Conversion Concerns
Religious conversion is another dimension of demographic change that warrants closer scrutiny. Its implications cannot be assessed merely by counting conversions; their geographical concentration, age and gender profiles, socio-economic backgrounds and circumstances also matter. It is essential to distinguish voluntary religious choice from conversion allegedly secured through coercion, intimidation, fraud or material inducement. The number of conversions, their association with marriage or financial incentives, complaints received and subsequent court findings should all form part of a systematic assessment.
Pew Research Centre’s analysis of India’s religious composition identifies fertility as the principal driver of religious demographic change since Independence, with migration and religious switching having comparatively limited effects at the national level. This broad finding, however, should not preclude closer examination of localised developments or specific allegations of coercive conversion. National averages sometimes conceal regional variations that merit investigation.
Religious and social networks, charitable organisations and NGOs play important roles in education, healthcare, employment, community credit, migrant assistance and poverty alleviation. At the same time, their financial and organisational activities require appropriate oversight.
Organisations receiving foreign contributions or substantial funding must comply with applicable financial and regulatory laws. Authorities should examine credible indications of financial irregularities, illegal foreign funding, money laundering, extremist financing and other unlawful activities.
India needs to distinguish three concepts that are too often collapsed into one. Demographic change is a natural consequence of fertility, mortality, migration and urbanisation. Demographic vulnerability arises when these processes place pressure on infrastructure, resources, governance or social cohesion.
The Government could consider a National Demographic Observatory to integrate Census information with health, migration, land, labour, civil-registration and crime statistics. Border states could establish multidisciplinary monitoring cells involving civil administration, police, intelligence agencies, border forces and revenue authorities. A District Demographic Vulnerability Index could track unusual population growth, migration patterns, infrastructure pressure, verified illegal immigration, land transactions and crime trends.
Geographic information systems, satellite imagery and artificial intelligence could help identify rapid settlement expansion, land-use changes and infrastructure stress.
Census Imperative
Census 2027 offers an important opportunity. India has not had a nationwide population count comparable to the 2011 Census for more than a decade. The forthcoming exercise, including caste enumeration in its second phase, should provide much-needed granular information on population, migration and socio-economic conditions.
Until then, contemporary claims about demographic transformation must be carefully classified as documented, estimated, reported, contested or requiring verification. Electoral rolls, property transactions and local population estimates can supplement official data, but none should be casually treated as a substitute for a comprehensive census.
India’s demographic future will increasingly depend on productivity rather than population expansion alone. Its simultaneous challenges of ageing, differential fertility, internal migration, urbanisation and border management demand a more sophisticated policy response.
The country needs neither demographic complacency nor demographic alarmism. It needs the ability to measure change, identify genuine vulnerabilities and investigate illegality wherever evidence exists. A National Demographic Security and Resilience Framework, combining population science, economic planning, migration governance, urban management and internal security, would be a sensible starting point.
(The writer is former Special Director General of the National Investigation Agency (NIA). Views personal.)
