This is a very good question. You can go to citydata.com to view all stats on an area and more. You should also go to the Duval county webpage http://www.coj.net and you can actually pull up crime stats in a specific area by entering an address, go to: http://www.coj.net/Departments/Sheriffs-Office/Crime-Statist
This is a very helpful site.
If I can be of further service let me know, Melanie Baird of INI realty 904-304-1500, or firstname.lastname@example.org