Human Geography — population, migration & settlements

Human geography studies how people occupy, move through and organise space. For UPSC, population, migration and settlements must be read together because one process changes the other two.

• Population means the size, distribution, composition and change of people in a territory; the core variables are fertility, mortality, migration, age structure, sex composition, literacy, workforce and dependency.
• Migration means a change of usual residence across a boundary for a period long enough to alter social and economic links; it may be rural-rural, rural-urban, urban-urban, urban-rural, intra-district, inter-district, inter-state or international.
• Settlement means the organised habitation pattern created by people; it ranges from hamlets and villages to census towns, statutory towns, urban agglomerations and metropolitan regions.
• The constitutional basis is indirect but important: Article 19(1)(d) protects citizens' movement throughout India, Article 19(1)(e) protects residence and settlement, and Article 19(5) permits reasonable restrictions in public interest and for Scheduled Tribe interests.
• Article 21 gives the right-to-life frame used in shelter, food security and migrant-worker litigation; Article 23 matters where migration becomes trafficking, bonded labour or forced labour.
• Article 246 with the Seventh Schedule places census in Union List Entry 69; citizenship, admission into India, emigration, passports and visas fall mainly in Union List Entries 17 and 19.
• The Census Act, 1948 provides the statutory base for population enumeration; Census Rules, 1990 and later notifications operationalise schedules, duties and confidentiality.
• Census data also feeds the institutional map: delimitation under Article 82 and Article 170 uses population after constitutionally specified freezes and readjustments; local bodies use household, housing, work and amenity data to site services, classify settlements and plan welfare delivery.
• Rural local settlement governance sits in Part IX, Articles 243 to 243O and the Eleventh Schedule; urban settlement governance sits in Part IXA, Articles 243P to 243ZG and the Twelfth Schedule.
• The Inter-State Migrant Workmen Act, 1979 was the classic labour-law frame for recruited inter-state workers; the Occupational Safety, Health and Working Conditions Code, 2020 carries forward a broader code-based approach, though implementation status must be checked when asked in a current-affairs question.
• Human geography is therefore not only a map topic. It is a bridge between demography, welfare law, labour markets, urbanisation, federalism, environment and regional planning.