The only way to be certain is to contact the police department for information on crime. Pay attention to the tone of voice the person on the phone has, and you might be able to pick up on more than just what information you get on paper.
Issues of crime and safety are often best referred to the local police department or county sheriff's department. They have access to the most current and accurate information and are generally willing to be helpful.
For accurate and up to the minute information consider a visit to the local police department, ask all your questions, hear all firsthand. If you are unfamiliar with the area do visit more than once and at different times of day, look at everything that is important to you, possibly chat with locals, etc., then make your determination--will your comfort level be reached.