2027 Census: Digital Roll‑out, Self‑Enumeration and Pending Caste Enumeration The Population Census 2027 will be conducted entirely digitally, marking three firsts for India: a digital census, inclusion of caste data, and a self‑enumeration option for residents. Registrar General and Census Commissioner of India (RG&CCI) Mritunjay Kumar Narayan briefed the press on March 30, 2026, outlining the schedule, methodological gaps and security safeguards. Key Developments Self‑enumeration portal opens from April 1 to April 15, 2026 for eight Union Territories/States and Delhi cantonment areas. First phase – House Listing Operations (HLO) – runs April 1 to September 30, 2026 across all states. Second phase – population enumeration, including caste enumeration – scheduled for February 2027 , except in Ladakh and snow‑bound districts where it ends by September 30, 2026 . Methodology for caste enumeration is still under review; multiple suggestions are being examined. West Bengal remains the only state yet to notify the Census process; deadline set for September 30, 2026 . Important Facts (Comparative 2011‑2026) Number of statutory towns rose from 4,041 to 5,128 (+1,087). Census towns increased from 3,892 to 4,580 (+688). Districts grew from 144 to 784 (increase of 640). Sub‑districts (tehsils) rose from 5,990 to 7,092 (+1,102). Villages declined by 1,030**, from 640,932 to 639,902**. States/UTs now total 36 , up by one since 2011. Legal and Data‑Security Framework All individual information is protected under Census Act, 1948 . Section 15 guarantees confidentiality; data cannot be accessed by states, courts or under the RTI. The Census data is classified as Critical Information Infrastructure (CII) , with end‑to‑end encryption, audited systems and secure transmission. UPSC Relevance The digital Census illustrates the intersection of technology, governance and data privacy —core themes for GS2 (Polity) and GS3 (Economy & Technology). Understanding the legal safeguards (Census Act) and the concept of CII is vital for questions on data security and constitutional provisions. The shift from paper to digital mode also impacts the speed of data availability, influencing policy planning and development indicators, a frequent GS1/GS3 topic. Way Forward Encourage wider adoption of self‑enumeration to ease enumerator burden and improve data accuracy. Finalize and communicate the caste enumeration methodology before the February 2027 phase. Monitor West Bengal’s notification process to ensure uniform rollout. Leverage the digital platform to publish most Census data within 2027, aiding timely policy formulation. Overall, the 2027 Census is set to be a landmark exercise in digital governance, with robust legal safeguards and a phased approach that balances inclusivity (caste data) with data security.