Understanding Migrant Households: Definitions and Types

Every year, lakhs of people pack their belongings and shift cities, states, or sometimes even countries in search of work, education, marriage, or simply a safer life. This constant churn of human movement reshapes families, villages, and economies all at once. To study this phenomenon properly, demographers rely on two foundational ideas: the migrant and the migrant household. These concepts may sound technical, but they unlock how we understand population change, labour markets, and social transformation.

Who exactly is a migrant? 🔗

At its simplest, a migrant is a person who has moved away from their usual place of residence. But statistical agencies need sharper definitions to actually count and study them. The National Sample Survey Office defines a migrant as a household member whose last usual place of residence (UPR) is different from the present place of enumeration, with a “usual place of residence” being a location where the person stayed continuously for at least six months.

The Census of India uses two parallel approaches. The first is the place of birth method, which classifies a person as a migrant if they are enumerated somewhere other than their birthplace. The second is the place of last residence method, which counts a person as a migrant if their current residence differs from their previous one. The International Organization for Migration takes an even broader view, defining a migrant as any person moving or who has moved across an international border or within a state away from their habitual place of residence, regardless of legal status, voluntariness, causes, or length of stay.

What these definitions share is a focus on three things: a change of residence, a meaningful duration, and a crossing of some administrative or geographical boundary. A person visiting relatives for Diwali is not a migrant. A construction worker who has lived in Bengaluru for the past eight months, however, very much is.

What is a migrant household? 🔗

If a migrant is an individual, a migrant household is the family unit linked to that movement. The NSSO 64th Round survey classified a household as a migrant household if the entire household, as enumerated, had moved to the place of enumeration during the 365 days preceding the survey. By this narrow definition, the household itself relocates as a unit.

However, in broader academic and policy use, a migrant household is also understood as a household from which at least one member has migrated, either temporarily or permanently. This second meaning is crucial in the Indian context because a huge share of migration is individual rather than family-based. A young man from Azamgarh in Uttar Pradesh may work in Mumbai and send remittances home, while his wife, parents, and children remain in the village. That family is a migrant household even though most members never moved.

This distinction matters because the consequences of migration-remittances, changes in gender roles, shifts in childcare, and altered consumption patterns-are felt most acutely in households that “send” migrants, not just those that “are” migrants.

Why definitions matter 🔗

Definitions shape numbers, and numbers shape policy. A UNICEF research report notes that one of the main lacunae in Census and NSSO data is the failure to adequately capture seasonal and short-term migration. Brick kiln workers, sugarcane harvesters, and construction labourers who move for three or four months at a time often slip through the cracks of official statistics. As a result, the country’s actual migrant population is widely believed to be far larger than headline figures suggest.

Types of migrants 🔗

Migrants are not a uniform group. They move for very different reasons, and these reasons give us a useful typology.

Economic migrants 🔗

The vast majority of migration in the country is driven by economic motives-employment, business, better wages, or escape from agricultural distress. According to Census 2011, the country had 45.6 crore migrants, or roughly 38 per cent of the population. While much of this is marriage-related migration of women, men overwhelmingly move for work. Key source states include Uttar Pradesh, Bihar, Rajasthan, and Madhya Pradesh, while Maharashtra, Delhi, Gujarat, and Haryana are the largest destination states.

Internationally, the country is the world’s largest origin of migrants. The Migration Policy Institute reports that nearly 18 million nationals live abroad, making this the largest diaspora in the world, with significant clusters in the Gulf countries, the United States, and the United Kingdom.

Social migrants 🔗

Social reasons-primarily marriage and family-account for a striking share of internal migration. Roughly 70 per cent of intra-state migration is driven by marriage and family movements, with the overwhelming majority being women relocating to their husband’s residence. Education is another major social driver: students moving from small towns to cities for college, or from one state to another for specialised courses, fall into this category.

Political migrants 🔗

Political migrants move because of conflict, persecution, riots, or political instability. The Partition of 1947 was perhaps the largest political migration in modern history, when millions crossed the newly drawn borders. More recent examples include displacement caused by insurgency in parts of the Northeast, the exodus of Kashmiri Pandits in the 1990s, and the arrival of refugees from neighbouring countries. Refugees are a legally distinct category protected under the 1951 UN Refugee Convention, which covers people fleeing persecution based on race, religion, nationality, political opinion, or membership in a particular social group.

Environmental migrants 🔗

Environmental migration is rapidly growing in significance. Floods in Assam and Bihar, cyclones along the eastern coast, droughts in Marathwada and Bundelkhand, and rising sea levels in the Sundarbans regularly displace families. The India Forum points out that as climate change intensifies, migration from environmentally stressed regions is becoming increasingly visible, and inter-state mobility within the country is likely to grow because of geographical diversity and climate pressure combined.

In-migrants and out-migrants 🔗

A second way to slice the migrant population is by direction of flow. In-migrants are those entering a particular area, while out-migrants are those leaving it. The same person can be both, depending on which area you are studying. A worker from Ballia who has moved to Surat is an out-migrant from Ballia and an in-migrant to Surat.

The in-migration rate is calculated as the volume of in-migration to a state divided by the enumerated population of that destination state. The out-migration rate is the volume of out-migration divided by the enumerated population of the origin state. The difference between the two gives us the net migration rate: a net in-migrant state receives more people than it loses, while a net out-migrant state loses more than it gains. Maharashtra, Delhi, and Gujarat are classic net in-migrant states; Bihar and Uttar Pradesh are major net out-migrant states.

Migration as a dynamic process 🔗

Migration is not a one-off event. It is a continuous, two-way flow that reshapes both the origin and the destination. Understanding it as a dynamic process is essential to appreciating its full impact.

Impact on the place of origin 🔗

For villages and small towns that send migrants, the consequences are mixed. On the positive side, remittances form a lifeline. Migrant workers send money home that pays for food, schooling, healthcare, and housing improvements, providing a kind of insurance against agricultural risk. Migration also relieves pressure on local labour markets and reduces unemployment.

On the negative side, the absence of working-age members-especially men-leaves behind households dominated by women, children, and the elderly. This restructures gender roles, often increasing women’s workload and decision-making power but also creating emotional and social strain. Skilled out-migration can also drain a region of its most productive talent, a phenomenon often called brain drain.

Impact on the place of destination 🔗

Destination areas, typically cities and industrialised states, gain workers who power construction, manufacturing, domestic services, and the urban informal economy. Migrants are, as one analysis puts it, the backbone of the urban economy, powering industrial clusters and urban agglomerations. Yet they often remain socially, politically, and economically excluded-working long hours for low wages, living in cramped settlements, and lacking access to ration cards, schools, or healthcare tied to their place of origin.

Destination areas also experience cultural mixing, infrastructural strain, and demographic shifts in age and sex ratios. Migrants act as agents of social change, diffusing ideas about technology, family planning, and education from cities back to villages.

Migration during the pandemic 🔗

The COVID-19 lockdown of 2020 made the dynamism of migration painfully visible. When work disappeared in cities overnight, millions of internal migrants attempted to return to their villages, often on foot. A comparative study published in Comparative Migration Studies describes this as a process of “reverse migration”-internal and international migrants returning to their place of origin from destination states or countries. It exposed how invisible these workers had become in official policy and how dependent both origin and destination regions were on their continuing movement.

Why studying migrants and their households matters 🔗

Migration sits at the intersection of demography, economics, and social policy. Counting migrants correctly affects how cities plan housing, how states allocate health budgets, how schools enrol children, and how welfare schemes like the public distribution system or MGNREGA reach the people who need them most. Recognising migrant households-not just migrants-ensures that families left behind in villages, often headed by women, are not overlooked in policy design.

The concepts of migrant and migrant household, in-migration and out-migration, and the four broad reasons-economic, social, political, environmental-are the building blocks that let researchers and policymakers move from raw human movement to meaningful analysis and intervention.

What do you think? If you or someone in your family has moved from one place to another for work, study, or marriage, how has that movement reshaped your household’s daily life and decisions? And do you think official surveys in the country accurately capture the realities of short-term and seasonal migrants, or are large groups still slipping through the cracks?

References

1. https://www.mospi.gov.in/sites/default/files/publication_reports/533_final.pdf
2. https://www.drishtiias.com/to-the-points/paper1/human-migration-in-india
3. https://www.unicef.org/india/media/3421/file/Child-migration-India2020.pdf
4. https://prsindia.org/theprsblog/migration-in-india-and-the-impact-of-the-lockdown-on-migrants
5. https://www.migrationpolicy.org/article/india-migration-country-profile
6. https://sociology.institute/sociology-in-india/various-forms-human-migration/
7. https://www.theindiaforum.in/economy/indias-migrants-and-exclusion-design
8. https://www.ies.gov.in/pdfs/Seminar-neerajkumar.pdf
9. https://link.springer.com/article/10.1186/s40878-021-00260-2