And worryingly, not all teenagers report it when they're a victim of crime, because they're too scared, or they think nothing will be done about it.
Boys and girls were equally likely to be crime victims, the poll, by charity Victim Support, showed. The poll asked 400 teenagers about crime.
Key facts:
- A third of teens have been the victim of more than one crime
- 30% didn't tell anyone about the crime
- Just over a third went to the police