The 15th Indian National census was conducted in two phases, houselisting and population enumeration. Houselisting phase began on April 1, 2010 and involved collection of information about all buildings. Information for National Population Register was also collected in the first phase, which will be used to issue a 12-digit unique identification number to all Indians by Unique Identification Authority of India. The second population enumeration phase was conducted between 9th to 28th February, 2011. Census has been conducted in India since 1872 and 2011 marks the first time biometric information was collected. According to the provisional reports released on March 31, 2011, the Indian population increased to 1.21 billion with a decadal growth of 17.64%. Adult literacy rate increased to 74.04% with a decadal growth of 9.21%.
Total Population - Census 2011: India
Total Population and data - Census 2011 : Kerala
