Slums are the most visible expression of the contradictions of Indian urbanisation — sites where the promise of the city meets the reality of exclusion. They are not accidental blemishes on otherwise prosperous cities but structural products of the way urban growth, housing markets and the labour economy are organised. To study slums sociologically is to study urban poverty and deprivation in their most concentrated form, and to ask why cities that generate great wealth also produce mass destitution.
What is a slum
A slum is commonly defined as a densely populated residential area marked by inadequate housing, insecure tenure and poor access to basic services such as clean water, sanitation, drainage and electricity. Slums range from long-established inner-city settlements to sprawling squatter colonies on the urban periphery and along railway lines, riverbanks and drains. Their residents often lack legal title to the land they occupy, which leaves them under constant threat of eviction and reluctant to invest in improving their dwellings.
Yet slums are not merely spaces of deprivation. They are also vibrant economic and social worlds — dense with livelihoods, home-based enterprise and thick networks of kin and community that provide support and security in the absence of state provision. Dharavi in Mumbai is the classic example of a settlement that is simultaneously deprived and economically productive.
Slums, housing and informal settlements
Slums arise from a fundamental mismatch between the demand for affordable urban housing and its supply. Migrants and the urban poor, unable to afford formal housing, build or rent informally on whatever land is available. Housing thus becomes a marker of the wider formal–informal divide that runs through the urban economy: just as work is informalised, so too is shelter.
Public policy has swung between demolition, resettlement and, more recently, in-situ upgrading and the granting of tenure. Slum clearance often simply displaces poverty to the periphery, cutting residents off from the livelihoods that drew them to central locations. Approaches that secure tenure and improve services in place tend to work better, because they build on the residents' own investment and social organisation rather than destroying it.
Urban poverty and deprivation
Slums concentrate but do not exhaust urban poverty. Deprivation in the city is multi-dimensional — it involves not only low income but poor health, malnutrition, insecure work, lack of education and exclusion from services and civic life. The urban poor are overwhelmingly employed in the informal sector, so their poverty is directly tied to the insecurity of their livelihoods. Caste, religion and migrant status compound spatial disadvantage, as marginalised groups are often confined to the worst locations and denied access to networks of opportunity.
This produces what scholars describe as social exclusion — a persistent marginality in which the poor are physically present in the city yet shut out from its benefits. Deprivation is reproduced across generations as inadequate housing, poor schooling and ill health reinforce one another.
The city of contrasts
Slums thus reveal the deeply unequal character of Indian urbanisation. The same processes that build gleaming commercial districts also generate the settlements that house the workers who service them. Segregation by class, caste and community increasingly shapes urban space, producing what some call the divided or dual city. Understanding slums is therefore inseparable from understanding urban inequality as a whole.
How to use this in the exam
Define slums precisely — inadequate housing, insecure tenure, poor services — but resist portraying them only as spaces of misery; note their economic vitality and dense social networks, with Dharavi as a ready example. Link slums to the housing shortage and to the formal–informal divide, and evaluate policy by contrasting demolition and displacement with in-situ upgrading and secure tenure. Then widen the lens to urban poverty as multi-dimensional deprivation and social exclusion, connecting it to informal employment and to caste and migrant disadvantage. Conclude with the image of the divided city, where slums are the structural counterpart of urban prosperity rather than an aberration from it.