India's shifting urban-rural balance, why people move, and how its biggest cities have grown into sprawling metropolitan regions.
India remains majority rural, but its level of urbanisation has risen steadily, driven by industrialisation, service-sector growth, and rural-to-urban migration. Urban areas are officially defined (Census criteria) by population size, density, and the share of male workforce in non-agricultural activity — with 'Census Towns' capturing places that are functionally urban but not yet administratively so.
Internal migration in India is classified by direction — rural-to-urban (the dominant stream, driven by employment), rural-to-rural (often marriage-related, especially for women), and inter-state labour migration (e.g., to industrial hubs). Migration is a key driver of urban population growth beyond natural increase, and is closely tracked via the Census and periodic surveys.
A metropolitan region (or urban agglomeration) is a core city plus its surrounding, economically-integrated urban/semi-urban periphery — India's largest include the Delhi NCR, Mumbai Metropolitan Region, and (in Andhra's context) emerging multi-nodal urban clusters around Visakhapatnam and the capital region, reflecting a broader national trend toward decentralised, multi-city metropolitan growth rather than single-city dominance.
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