This study is based on census data and it is important to know how far India’s population is correctly enumerated. India has a long history of conducting population censuses since the late 19th century, and the 2011 Census was the fifteenth census conducted since then. Although the quality of data on population size was affected by socio-political conditions during British rule such as the civil disobedience movement there was no precise evaluation of the quality of data by the British Indian censuses.