What is a good Crime/Vacancy rate

[Terron Winn]

Good Morning, Good Evening, Good afternoon, 

Hello all, 

I see tons of sites when I google vacancy rates and or Crime rates for a specific area of interest  but my question is, What credible sites are you using?

Also, what is considered to be a good vacancy/crime rate? What score should I stay away from?

Thank you 

[Andrew Kougl]

I use Trulia crime map myself. Haven't found a good one for vacancy yet.