If you are looking to invest in multi family remotely, I would start off with an analysis of property price to rent ratios. When property prices continue to rise, but rents remain stagnant, that is not where you want to be. Yes, I would look into the information that you provided as well as other factors to ensure that the location that you choose is ideal. If you listen to BP podcast then I am sure you hear them rag on Detroit. This is because non-investment related issues make the area hard to be successful in.
As far as doing market analysis, I would go with MLS. This will provide you with a lot of data in relation to real estate, but Im not sure how far it goes outside of that. Real estate is not just about numbers. Real estate is local, and it spans further than rents and debt service. I think your best bet would be to look for a mentor that does remote investing in multi-family and see how they are choosing their markets. I know that there are podcasts on the topic.