I'm also a big fan of a rarely used tactic...TALK to the homeowners. It's absolutely amazing what you'll learn about a neighborhood - both good & bad, simply by stopping your car and asking some questions. "Do you love this neighborhood...why...why not"? etc.
Best of Luck & I hope you found this helpful.
ERA Herman Group
303-995-0997 / 970-488-9391
Your Castle Real Estate
You can also check with crime report websites.