The 1998 national census of India estimated the total number of child labour , aged 4 -- 15 , to be at 12.6 million , out of a total child population of 253 million in 5-14 age group .
The 1998 national census of India estimated the total number of child labour , aged 4-15 , to be at 12.6 million , out of a total child population of 253 million in 5-14 age group .