Census 2011 data reveals caste-wise Scheduled Caste population distribution across India. The overall representation of Scheduled Castes in Central Government services stands at 17.14%, against a constitutional reservation of 15%. This data, disseminated by PIB, covers SC representation across Groups A, B, C, and erstwhile Group D services. The constitutional reservation for SCs under Article 16(4A) mandates proportional representation, and the 17.14% figure indicates that SC representation has crossed the mandated reservation threshold in aggregate central services.

The representation of Scheduled Castes in government services is governed by a framework rooted in Articles 15(4), 16(4), and 16(4A) of the Constitution. The 15% reservation for SCs in Central Government jobs is derived from their approximate share of India's population as per Census 2011 — 16.6% of India's total population (approximately 20.14 crore out of 121 crore). The 17.14% aggregate representation figure is significant because it suggests that, in total numbers, SCs have crossed their reservation quota — a fact the examiner can use to test whether aspirants distinguish between 'aggregate representation' and 'representation at senior levels' (Group A posts often show under-representation despite aggregate compliance). Census 2011 is the last completed census and remains the official reference for reservation calculations, population share, and welfare scheme targeting. The SC population data also feeds into delimitation exercises, Panchayati Raj seat reservations under Article 243D, and the allocation of seats in legislatures under Article 330 and 332. UPSC questions frequently test the constitutional provisions behind reservation — which article, what condition, what judicial interpretation — rather than the raw percentages alone. The distinction between reservation in promotion (Article 16(4A), inserted by 77th Amendment, 1995) and reservation in initial appointment (Article 16(4)) is a recurring examiner trap.