According to a recent article in The Christian Post:

Only 11% of Christians (survey of 716) said they would save sex for marriage. 60% would be willing to have sex without any sort of commitment, and 23% would only have sex with someone whom they loved.
Relevant Magazine released a poll in 2011 showing 80% of young Christian singles have had sex.
In 2012, the National Association of Evangelicals, in conjunction with Grey Matter Research found 44% of unmarried Evangelicals between the ages of 18-29 reported having sex.
Of Christian singles responding to a poll sponsored by ChristianMingle, 61% were willing to have uncommitted sex.

A couple thoughts present themselves, the most basic of which is this: whatever the church is doing with its young people to mitigate the corrosive effects of our hyper-sexual culture, it's not working. It's time to rethink our approach to teaching the Biblical value of sexual purity.