The Barna Group has just published a new report, "Most Americans Consider Easter a Religious Holiday, But Fewer Correctly Identify its Meaning."  Of the adults polled, 67% consider Easter a religious holiday, while 42% tie the holiday with Jesus' resurrection. 

For the group Barna identifies as Mosaics (18-25), 58% consider Easter to be religous, while just 37% tie it with the resurrection of Jesus, which shows "the increasingly secular mindset of young adults."