Census 2027: First Digital and Caste-Enumerated Census After a Decade-Long Delay
India is preparing for Census 2027, the 16th decennial census, delayed by over five years since the last census in 2011 (the 2021 census was postponed due to the COVID-19 pandemic)
It will be India's first fully digital census: data collected via mobile applications (Android and iOS) and a dedicated Census Management and Monitoring System (CMMS) portal; self-enumeration is also offered online
For the first time since 1931, the census will include caste enumeration — decided by the Cabinet Committee on Political Affairs (CCPA) on 30 April 2025
Two phases: (i) Houselisting and Housing Census — April to September 2026; (ii) Population Enumeration — February 2027
Census data will form the basis for delimitation of Lok Sabha constituencies, potentially triggering the women's reservation (one-third seats) under the 106th Constitutional Amendment Act, 2023
Census: Constitutional and Legal Framework
The census is mandated under Entry 69 of the Union List (Seventh Schedule), making it an exclusive Central subject. It is conducted under the Census Act, 1948. The Registrar General and Census Commissioner of India, under the Ministry of Home Affairs, administers the census. Article 81 of the Constitution links Lok Sabha seat allocation to population, making the census data directly relevant to parliamentary representation.
The legal framework for this census — including digital methodology and the CCPA's decision to include caste — represents the most significant expansion in census scope and method since independence.
Delimitation: Constitutional Provisions and the Frozen Freeze
Delimitation is the process of redrawing constituency boundaries based on census data, under Articles 82 (Lok Sabha) and 170 (State Assemblies) of the Constitution. The Delimitation Commission Act, 2002 governs the process. Parliamentary seats were last delimited based on the 1971 census and have been frozen since 1976 (42nd Amendment Act) to avoid penalising states that successfully reduced population growth. The freeze was extended by the 84th Amendment Act (2002) until 2026, and further until after the first census following 2026.
Census 2027 will directly trigger the delimitation exercise for the first time in over 50 years, with significant political consequences for regional representation.
106th Constitutional Amendment: Women's Reservation and the Census Link
The Constitution (106th Amendment) Act, 2023 (also called the Nari Shakti Vandan Adhiniyam) reserves one-third of all seats in Lok Sabha, State Legislative Assemblies, and the Delhi Assembly for women, including within SC/ST reserved seats. However, the reservation comes into effect only after the census data is published and delimitation completed — making Census 2027 the direct trigger.
The caste enumeration data from Census 2027, combined with delimitation, will determine the configuration of the women's reservation under the 106th Amendment — creating a direct chain between this census and parliamentary representation patterns for decades.
Caste Enumeration: Historical Context and Policy Implications
The last comprehensive caste census was conducted in 1931 under British India. Independent India's censuses (1951 onwards) enumerate only Scheduled Castes and Scheduled Tribes; data for Other Backward Classes (OBCs) has been collected only through socioeconomic surveys (such as the Socio-Economic Caste Census, SECC, 2011). The Mandal Commission (1980) estimated OBCs at 52% of the population using 1931 data. Updated caste data will have direct implications for OBC reservation policy and sub-classification of reservations.
Caste enumeration in Census 2027 will provide the first reliable OBC population data since 1931, potentially reshaping the legal basis for reservation policies and their judicial scrutiny.
- Census 2027 — 16th decennial census; first digital census of India
- Last completed census: 2011; gap of 16+ years makes this the longest inter-census period in independent India
- Caste enumeration last done: 1931 (over 90 years ago)
- CCPA decision on caste enumeration: 30 April 2025
- Phase 1 (Houselisting): April–September 2026; Phase 2 (Population Enumeration): February 2027
- 106th Amendment, 2023 — one-third reservation for women; effective only after census + delimitation
- Lok Sabha delimitation frozen since 1976 (42nd Amendment); freeze extended by 84th Amendment (2002)