In addition to getting the crime statistics from the township and or the police department, I always suggest to my clients to do a subjective test. One way of doing this is to drive to the neighborhood in the morning, afternoon around school let out time and in the early evening when people are returning from work and make an observation about the comings and goings. This is very subjective but also very insightful.
Well, as an agent that sells in Superior Township and SE Michigan, I would point you to the Superior Township municipal website. It is a great jumping off point for more information about the township (http://www.superior-twp.org/).