Use a good search engine and choose your search words wisely. You also need to define what you mean by "young."
You can also try the CIA Factbook and choose different countries. Here's the link to Canada:
https://www.cia.gov/library/publications/the-world-factbook/geos/ca.html
For other countries, use the Select a Country menu.
If you need help learning how to search, including how to choose good search terms, go here and scroll down to the links under HOW TO SEARCH THE INTERNET:
http://hanlib.sou.edu/searchtools/
=)
where can i find statsics on young voters in other countries?
2 answers
PS -- "voting" often is referred to as "suffrage."