The demographics of Snapchat users

"Snapchat has significant scale: We estimate it reached 82 million monthly active users globally as of May 2014. That's about one-third Instagram's size.
The majority of Snapchat's users are female, and 70% are between the ages of 13 and 25, according to our estimates. Young women are a difficult-to-reach and influential demographic.
Engagement is high: Two-fifths of 18-year-olds in the U.S. use it "multiple times daily" to communicate with family and friends. That's a higher proportion than those saying they use voice calls multiple times daily.
Visual sharing on Snapchat is exploding. Sharing of Snapchat Stories increased 100% in the last two months. Stories are now getting 1 billion views daily, while 760 million disappearing photos and videos are sent daily."

Source:  Business Insider, 24th June 2014