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Bihar CM Samrat Choudhary launches self-enumeration phase of Census 2027

April 17, 2026 5 min read Polity & Governance Social Issues GS Paper 2 GS Paper 1
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What Happened

  • Bihar Chief Minister Samrat Choudhary launched the self-enumeration phase of Census 2027 in Bihar, urging citizens to participate in this first-ever digitally-enabled, citizen-driven phase of India's decennial census.
  • The self-enumeration feature — a new addition to India's census methodology — allows citizens to enter their household data digitally before door-to-door enumerators visit. The window runs for 15 days immediately before each state's 30-day house-listing exercise.
  • Phase I (House Listing and Housing Census) is being conducted state-by-state across India between April and September 2026. Population Enumeration (Phase II) will follow in 2027.
  • Census 2027 is the first census since 2011 — the 2021 census was postponed due to COVID-19 and subsequent logistical challenges, making India now 16 years without updated population data.
  • The completion of Census 2027 is the constitutional trigger for delimitation under the 84th Amendment Act, 2001 — once census data is published, Parliament's obligation to readjust Lok Sabha constituency boundaries (Article 82) becomes active. Women's reservation under the 106th Amendment also requires this census-delimitation cycle.

Static Topic Bridges

Constitutional Basis of the Census in India

The Census of India has a statutory and constitutional basis that places it squarely within the Union government's domain.

  • Constitutional entry: Seventh Schedule, List I (Union List), Entry 69 — "Census" is exclusively a Union subject; state governments cannot conduct their own census for national purposes
  • Governing legislation: Census Act, 1948 (pre-Constitution law, deemed continued under Article 372); Census Rules, 1990 (amended periodically)
  • Article 246: Parliament has exclusive power to make laws on subjects in the Union List (Schedule VII, List I)
  • Conducting authority: Office of the Registrar General and Census Commissioner of India (RGI), under the Ministry of Home Affairs
  • Census Commissioner: Mritunjay Kumar Narayan (current RGI as of 2026); the office also maintains the National Population Register (NPR) and the Civil Registration System (CRS)
  • Decennial nature: Census is conducted every 10 years (decennial) — 1951, 1961, 1971, 1981, 1991, 2001, 2011, and now 2027 (the 2021 census was delayed to 2027)
  • Legal compulsion: Census Act, 1948, Section 10 — all persons are legally required to provide information to census enumerators; Section 11 penalises false answers; Section 15 penalises refusal to answer

Connection to this news: The Census 2027 is not merely a demographic exercise — it is a constitutional prerequisite for the delimitation that will unlock both the women's reservation under the 106th Amendment and the readjustment of Lok Sabha seats under Article 82. Bihar's active participation under CM Choudhary's push is thus politically and constitutionally significant.

Census 2027 — New Features and Methodology

  • First digital census in India's history — mobile app-based enumeration
  • Self-Enumeration (new): Citizens can submit household data online 15 days before door-to-door enumeration begins in their area
  • Two phases: (1) House Listing and Housing Census (HLO): April–September 2026 — records details of every building, household, household amenities, economic activity, etc. (2) Population Enumeration: Early 2027 — counts every individual
  • Digital features: Mobile app for enumerators; door-step data verification; NPR (National Population Register) updated simultaneously
  • Expected data publication: Approximately 2028-29 (preliminary data); full data with disaggregated tables ~2029-30
  • Caste data: Unlike Socio-Economic Caste Census (SECC, 2011), this census will enumerate OBC population data for the first time in a national census — addressing the long-standing demand for a "caste census" (this was announced as part of the Census 2027 framework)
  • Language: Available in 18 languages; Questionnaire includes ~31 household questions and ~29 individual questions
  • Bihar's specific significance: Bihar has one of India's youngest and fastest-growing populations — accurate census data from Bihar will substantially affect delimitation outcomes

Connection to this news: Bihar CM's personal involvement in launching the self-enumeration phase signals the political stakes. Bihar stands to gain seats in any population-based delimitation, and an accurate, high-coverage census ensures Bihar's actual population is fully reflected.

  • Article 82 obligation: After each census, Parliament MUST readjust Lok Sabha constituency allocations — but the 84th Amendment delayed this until Census 2027 data is published
  • After Census 2027 data is published (expected 2028-29): Parliament must constitute a Delimitation Commission (under the Delimitation Commission Act)
  • Delimitation Commission timeline: Typically 2-4 years to complete work (2002 Commission: constituted 2002, completed 2008, though this was purely boundary changes)
  • For a 131st Amendment-style seat expansion: Would need both constituency boundary redrawing AND new seat allocations per state — likely 3-5 years minimum
  • 106th Amendment trigger (Article 334A): "After the census taken after the commencement of this Act is published AND after delimitation consequent upon such census" — both conditions required before women's reservation kicks in
  • Earliest general election with women's reservation: If census data published by 2029, delimitation done by 2032, next election would be 2034 (Lok Sabha elections are due in May 2029; 2034 would be the following election)
  • Interim arrangement demanded by opposition: Implement 33% women's reservation within current 543 seats for the 2029 elections — requires a simpler amendment to the trigger condition in Article 334A

Connection to this news: The Census 2027 is the pivot around which all major constitutional processes — delimitation, women's reservation, OBC identification, SC/ST seat adjustments — are organised. Bihar's proactive launch of the self-enumeration phase is thus far more consequential than a routine administrative exercise.

Key Facts & Data

  • Census 2027: First digital census; first with self-enumeration option
  • Constitutional basis: Union List, Entry 69; Article 246
  • Governing Act: Census Act, 1948
  • Conducting authority: Registrar General and Census Commissioner of India (Ministry of Home Affairs)
  • Last census: 2011 (16-year gap)
  • Phase I (House Listing): April–September 2026
  • Phase II (Population Enumeration): Early 2027
  • Expected data publication: 2028-29
  • Self-enumeration window: 15 days before door-to-door survey in each state
  • Bihar's population (2011): ~104 million (3rd largest state)
  • Link to delimitation: 84th Amendment requires delimitation after "first census after 2026" = Census 2027
  • Link to women's reservation: 106th Amendment's Articles 330A/332A trigger requires census + delimitation
  • First census to enumerate OBC data: Census 2027 (announced decision)
  • Earliest women's reservation implementation: ~2034 (after full census-delimitation cycle)