I had responded and blogged about the answer to this question
When people ask me this question, I generally refer them to various sites.
CrimeReports.com - This is probably my favorite. I entered my home address in Alameda CA, chose the type of crime activity I wanted to see (for example, homicide, robbery, assault) and â€œlayeredâ€ them. This is what it shows.
Neighborhood Scout --- hereâ€™s an introductory video on how to navigate their site that provides information on the neighborhood, public schools, real estate values appreciation, crime rates, and even find a real estate agent. Some of the information is free, while others are by subscription.
Trulia also has a terrific map that even provides dates and types of criminal activity within the area.
Sperlingâ€™s Best Places has some good information, too, and allows you to compare cities at different angles: schools, climate, cost of living, crime rates, etc.
Bottom line --you have to do your own research based on your own understanding of what is "safe".