Miriam offered some great links. As far as crime rate, you will want to use a few websites like city-data, etc to determine the area's crime, etc. You could also talk with the local police station, they may be able to shed light on your concerns or questions.
Hello, your question doesn't specify what area you are looking for crime information about. I have included a few links to other websites that may be able to assist you with the information you need. Good luck!