The best way to find out is to call the Dallas Ga. Police Dept. at 770-443-8100.
They should be able to share some crime statistics with you as well as any personal experiences that they have knowledge of within that community.
Hope that helps you!
I am not in your area, but as a general rule of thumb, if you want to know the crime rate of a specific area or neighborhood, the best way to get the facts is by contacting the local police department. Let them know you are considering a move to this location and are interested in crime statistics such as the number of calls over the past 3 months. They should be happy to assist you.