A new report suggests that beleaguered Snapchat has at least one advantage over Facebook: lots of young American fans.

In the U.S. this year, Snapchat is likely to have more teenage users and adult users under 25 than Facebook, according to a new analysis from industry forecaster eMarketer. In a report, the firm points to “Facebook-nevers,” analyst Oscar Orozco’s term for “children aging into the tween demographic who appear to be overlooking Facebook altogether.”

Teens...