A demographic profile of India can be prepared out of the data collected by the office of the Registrar General of India who is the responsible authority for conducting an all-India census of population every ten years. The census of India unleashes a vast store of official data relating to the demographic scene in the country. It is with the help of this that a concise demographic profile of the country can be prepared. The country's first all-India census was completed in 1872. Thereafter, decennial censuses have been organised in the years ending in '1', i.e., 1881, 1891, 1901, 1911, 1921, etc. The last such census, i.e., 14th census was completed in March, 2001. The data in the census has been collected on the reference date namely March 1, 2001. The census in India is conducted under the Census Act, 1948, which makes it obligatory for the public to provide all answers correctly and fully.