The Government of India, through the Office of the Registrar General and Census Commissioner of India (RGI), has begun fieldwork for the first phase of Census 2027 — the Houselisting and Housing Census — around April 13, 2026, in several states. This is India's first decennial census since 2011; the 2021 Census was postponed repeatedly due to the COVID-19 pandemic and other logistical reasons, making this the first census to be conducted after a gap of sixteen years. The Census is being held in two phases — the Houselisting and Housing Census phase from April 2026 to September 2026 in most states, followed by the Population Enumeration phase with a reference date of March 1, 2027 (October 1, 2026 for snow-bound areas of Jammu and Kashmir, Himachal Pradesh and Uttarakhand). For the first time since 1931, Census 2027 will collect caste data for all castes, not just Scheduled Castes and Scheduled Tribes, following the Union Cabinet's 2025 decision to enumerate castes. The exercise is being conducted under the Census Act 1948 and Census Rules 1990 by around three million enumerators. Technology integration is a major change: enumerators will use the Census Mobile App for digital data capture, and the Self-Enumeration Portal will allow citizens to fill in their own details online, with unique reference codes linked to the enumeration blocks. Data points collected in Phase 1 include condition and material of the house, ownership status, access to drinking water, toilets, electricity, LPG, internet, assets such as vehicles, smartphones, television and computers. Phase 2 will capture demographic details — age, sex, religion, language, caste, literacy, economic activity, migration, fertility and disability. The Census is expected to reshape delimitation under Article 82, welfare targeting, reservation policy debates and development planning for the next decade.