The 1971 census of India was the 11th in a series of censuses held in India every decade since 1872.
[1] The population of India was counted as 547,949,809 people.
[2] The schedule contained 35 questions.
[4] Birth Place Duration of Residence at the village or town of enumeration Religion S.C. or S.T.
Literacy (L or O) Educational level Mother tongue Other languages Secondary Work