There is a website which has a forum where you can ask about specific places, the quality of life there, property prices, even the best beer bars.
It's a pretty cool resource and people there do not hold back their opinions. It is broken down by state and locality, so you may need to post your questions in several forums. I've seen many posts from interracial couples there, asking how open-minded or diverse a place is. People get into some lengthy discussions on that forum and will go into detail in answering questions and suggesting towns -- or even recommending neighborhoods and apartment complexes. The main site collects data about places and puts together reports on demographics, air quality, top ten towns, etc.