Trulia is a pretty good source for real estate information the site has a good search function. Here's what came up when I typed in 'crime + statistics' in Chicago. Good luck!
Visit the property at different times of the day and night. See if its a neighborhood you feel comfortable in.
Also check out the crime websites and talk to local police and neighbors.
Americorp Real Estate
Brokers Associate, e-PRO
I suggest going to the website: chicago.everyblock.com. This site will give you all the crimes and type of crimes, if any, have been committed within a certain distance of a certain property address or certain area. I hope this helps.