India is acountry ot billion of people, majority of population are young between the age of 16-27. Here we have data from Ministry of Home Affairrs. The date is slipitted into states and overall in total.
PS: The cencus for year 2021 is delay for one year and then delay delay and delay...now it is propsed to start on October 2023.
Reference
https://rbidocs.rbi.org.in/rdocs/Publications/PDFs/6TABLE4134B659E3B243EE9CB292D36ABC281B.PDF