Caste is an ancient system of social hierarchy in India and is influential in defining social standing and deciding who gets access to resources, education and economic opportunity. There are hundreds of caste groups based on occupation and economic status across India, particularly among Hindus, but the country has limited or outdated data on how many people belong to them.
The last attempt to gather detailed caste information through a census dates to 1931, during British colonial rule. Since independent India's first census in 1951, it counted only Dalits and Adivasis, members of marginalized groups known as Scheduled Castes and Scheduled Tribes who qualify for certain government benefits.
Successive governments have resisted conducting a full caste count, arguing it could heighten social tensions and trigger unrest.
Population data collected through the census underpins the distribution of government welfare programs and a wide range of public policies.
It could also prompt a redrawing of India's political map, as seats in the lower house of Parliament and state legislatures may be increased to reflect population growth. A 2023 law reserves one-third of legislative seats for women, so any expansion would raise the number of seats set aside for female representatives.