---
title: "Census of India 2011: Key Data & Findings | Model Diplomat"
description: "The Census of India 2011 counted 1.21 billion people in the 15th national census. Covers population, sex ratio, literacy, and how it differs from the NPR."
url: "https://modeldiplomat.com/learn/glossary/census-of-india-2011"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The Census of India 2011 was the fifteenth national census, enumerating a population of 1.
- 21 billion across two phases conducted in 2010 and 2011.
- What is the legal basis for the Census of India 2011?
- How does the census differ from the National Population Register?
- Why is the 2011 census still in use, and what are the consequences?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

The Census of India 2011 was the fifteenth national census, enumerating a population of 1.21 billion across two phases conducted in 2010 and 2011.

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## Timeline

1. 28 February 2011

   The second phase, the Population Enumeration, was conducted between 9 and , with a revisional round from 1 to 5 March 2011 and a reference moment fixed at 00…

2. 5 March 2011

   The second phase, the Population Enumeration, was conducted between 9 and 28 February 2011, with a revisional round from 1 to and a reference moment fixed a…

3. 1 March 2011

   The second phase, the Population Enumeration, was conducted between 9 and 28 February 2011, with a revisional round from 1 to 5 March 2011 and a reference mo…

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Example

In March 2011, Registrar General C. Chandramouli released the provisional totals of the Census of India 2011, recording India's population at 1.21 billion and a decadal growth rate of 17.7 percent.

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