Questionnaire for first phase of Census notified

1. At a Glance

• The Registrar General and Census Commissioner of India (RG&CCI) notified 33 questions for the first phase (Houselisting and Housing Census) of Census 2027 [S4].
• Census 2027 is India's first digital Census, first with self-enumeration, and first since 1931 to enumerate caste (in Phase 2) [S1][S4].
• Directly examinable for Prelims (numbers, phases, nodal authority) and Mains GS-II (governance, federalism in implementation) and GS-I (social structure/caste data debate).

2. Why in the News

• On 22 January 2026 (Thursday), RG&CCI Mritunjay Kumar Narayan notified 33 questions in the official Gazette for Phase-I of Census 2027, to be conducted 1 April – 30 September 2026 [Excerpt/S5].
• Reported by The Hindu Business Line (23 January 2026 edition) [Excerpt].
• Phase-I houselisting/housing census actually commenced 1 April 2026 in digital mode nationwide [S4][S6].

3. Background & Evolution

• Census in India conducted decennially since 1881; this would be the 16th Census and first since 2011 (2021 round was skipped/delayed) [S1].
• Census 2021 notification (for the then-upcoming round) was published 7 January 2020 with 31 questions; that round was postponed due to COVID-19 and never conducted [Excerpt].
• Census 2027 questionnaire splits the earlier combined question on floor/wall/roof material into three separate questions on predominant material of floor, wall, and roof — raising the count from 31 to 33 [Excerpt].
• Phase-I (Houselisting & Housing Census, HLO): April–September 2026 (30-day window per State/UT, per State/UT government convenience) [S4][S6].
• Phase-II (Population Enumeration, PE): scheduled February 2027; will capture demographic, socio-economic, cultural, migration, and fertility data, and is when caste will be enumerated [Excerpt][S4].
• Pre-test/pilot exercises for Population Census 2027 were conducted, e.g., in Uttar Pradesh in November 2025 [Excerpt].

4. Core Static Facts

5. Multi-Dimensional Analysis

• Administrative: Federal coordination challenge — 30-day enumeration window scheduled per State/UT convenience; large deployment of ~18,600 technical staff shows the logistical scale [S4].
• Social: Reintroduction of caste enumeration (first since 1931) reopens the debate on caste-based data for reservation policy and welfare targeting; a politically sensitive dimension for GS-I/GS-II.
• Scientific/Technological: First fully digital Census using mobile app-based data collection by enumerators and a self-enumeration web portal — significant shift from paper schedules [S4][S1].
• Governance/Ethical: Self-enumeration raises data-privacy, digital-divide, and data-accuracy concerns (verification of self-reported data before HLO visit).
• Legal/Constitutional: Conducted under the Census Act, 1948; caste enumeration decision has constitutional/policy implications for Article 340 (Backward Classes Commission) and reservation debates.

6. Recent Developments (last 12-18 months)

• November 2025: Pre-test exercise for Population Census 2027 conducted in Uttar Pradesh [Excerpt].
• 22 January 2026: RG&CCI notifies 33-question Phase-I questionnaire in the Gazette [Excerpt].
• 1 April 2026: Census 2027 Phase-I (Houselisting and Housing Census) commences nationwide in digital mode [S4][S6].
• 25 April 2026: PIB press note "Census 2027: India's First Digital Enumeration Exercise" published [S1].
• February 2027 (scheduled): Population Enumeration phase, including caste enumeration, to be conducted [Excerpt][S4].

7. Prelims Hooks

• Census 2027 Phase-I questionnaire has 33 questions, notified by RG&CCI on 22 January 2026 [Excerpt].
• The 2020-notified questionnaire (for the delayed 2021 Census) had 31 questions [Excerpt].
• Increase from 31 to 33 questions due to splitting the floor/wall/roof material question into three separate questions [Excerpt].
• Census 2027 Phase-I (Houselisting & Housing Census): 1 April – 30 September 2026 [Excerpt].
• Census 2027 Phase-II (Population Enumeration): scheduled for February 2027 [Excerpt].
• Caste will be enumerated in Phase-II, not Phase-I [Excerpt].
• This will be first Census since 1931 to enumerate caste [S1].
• Census 2027 is India's first fully digital Census [S1][S4].
• First Census offering self-enumeration via an online portal [Excerpt][S4].
• RG&CCI notifying the questionnaire: Mritunjay Kumar Narayan [Excerpt].
• Nodal ministry for the Census: Ministry of Home Affairs (not Ministry of Statistics).
• Census conducted under the Census Act, 1948.
• Approximately 18,600 technical personnel engaged for ~550 days [S4].
• Pre-test exercise for Census 2027 held in Uttar Pradesh, November 2025 [Excerpt].
• Self-enumeration window: 15 days, preceding the 30-day HLO door-to-door phase [S4].

8. Mains Relevance

• GS-I (Society): Salience of caste-based census data, social justice implications, comparison with 1931 Census.
• GS-II (Governance/Polity): Federal implementation challenges, digital governance, data privacy in self-enumeration, transparency and accountability in RG&CCI's functioning.
• GS-III (Technology/Economy): Digitalization of Census, use of mobile technology in large-scale data collection, implications for welfare scheme targeting/economic planning.
• Sample Mains stems: 1. "Discuss the significance of caste enumeration in Census 2027 for social justice and policy planning in India." (GS-I) 2. "Examine the administrative and technological challenges in conducting India's first fully digital Census." (GS-II/GS-III) 3. "How does self-enumeration in Census 2027 balance citizen convenience with data accuracy and privacy concerns?" (GS-II)

9. Related Topics to Study Next

• Census Act, 1948 — legal framework under which the Census is conducted.
• Socio-Economic and Caste Census (SECC) 2011 — earlier attempt at caste-linked data collection; useful comparison.
• National Population Register (NPR) — often conducted alongside Census; relevant for citizenship debates.
• Mandal Commission / Article 340 — constitutional basis for backward classes' data and reservation.
• Delimitation exercise — Census population data feeds into delimitation of constituencies, a live 2026 issue.
• Aadhaar and digital governance framework — relevant to digital/self-enumeration infrastructure.
• NITI Aayog's SDG data / MoSPI statistics ecosystem — broader context of India's statistical architecture.

10. Common Errors / Trap Areas

• Confusing Phase-I (Houselisting & Housing Census) with Phase-II (Population Enumeration) — caste is enumerated only in Phase-II, not Phase-I.
• Assuming Census 2027 is the first-ever caste census — it is the first since 1931, not the first in independent India's history (SECC 2011 was a separate, non-Census caste exercise).
• Misattributing the Census to the Ministry of Statistics and Programme Implementation (MoSPI) instead of the Ministry of Home Affairs.
• Confusing the 31-question 2020/2021 notification with the current 33-question 2026 notification — a frequently tested numeric trap.
• Assuming Census 2027 is only a "count of population" — it also captures housing, amenities, migration, and fertility data across two distinct schedules.

11. Sources

• [S1] Census 2027: India's First Digital Enumeration Exercise — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2255461&reg=1&lang=1 — (tier: 1)
• [S4] Census 2027: India's First Digital Enumeration Exercise (PDF) — https://static.pib.gov.in/WriteReadData/specificdocs/documents/2026/apr/doc2026425856601.pdf — (tier: 1)
• [S5] Registrar General and Census Commissioner of India addresses Press Conference on Census-2027 — https://www.pib.gov.in/PressReleasePage.aspx?lang=1&PRID=2246847&reg=3 — (tier: 1)
• [S6] India to conduct first fully digital Census in 2027; nationwide exercise to begin April 1 — DD News — https://ddnews.gov.in/en/india-to-conduct-first-fully-digital-census-in-2027-nationwide-exercise-to-begin-april-1/ — (tier: 4)
• [Excerpt] "Questionnaire for first phase of Census notified," Vijaita Singh, The Hindu Business Line, 23 January 2026 — https://www.thehindu.com/todays-paper/2026-01-23/th_international/articleGA4FFPGAN-13209567.ece — (tier: 4)