Have you explored Trulia's Stats & Trends tool yet? It's very easy to use. Simply click on the "Stats & Trends" tab at the top of the page. If you haven't already, enter the location you're interested in (in this case, Villa Rica, GA). After clicking "Search," you'll get the low down on everything from Average Listing Price to Popular Communities by Zip Code to Crime Rates.
Here is the link for the Villa Rica, GA Stats & Trends page: http://www.trulia.com/real_estate/Villa_Rica-Georgia/
Crime rates are detailed toward the bottom of the page, so make sure you scroll down. Lorie Gould also makes a great point. For more specific information, consider contacting the local law enforcement office in the area.
Feel free to e-mail me at firstname.lastname@example.org should you have any additional questions.
Wishing you luck in your home search,