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 2011 national census of India found the total number of child labour, aged 5–14, to be at 4.35 million, and the total child population to be 259.64 million in that age group.