@Jason A. my screening process for a neighborhood is fairly comprehensive but eliminates some of these questions.
The process I typically follow starts with looking at US Census - block level population data, specifically population growth and median income. I look for positive population growth and median income over 35k. Next I use the city-data.com crime section and check to see if criminal activity is comparable to US averages, if higher, I like to see a downward trend over the past few years. I also look at Trulia Crime Maps and make sure that this neighborhood does not have a lot of criminal activity, specifically violent crime. If the neighborhood has a name, I typically type in on google "'specific neighborhood' news" and search for articles written in the past year. This typically gives me a good idea of what the neighborhood is like whether it is in the same metro as me (in Forest Park) or in another state.
If you'd like a little more information on my process, please reach out - Id be happy to help.