Very marginal Tenants here: sometimes they have eviction or two and put extra security deposits, always pay late fees and once in a while there is an eviction happen.These you can tell by higher crime rate, subsidized school lunches very high, low market value and high %% of rentals (auditor site gives that info as "non owner occupied".The best idea to get a feeling for the areas you'd be comfortable to buy- drive by on Friday evening or Saturday  whole day long.Statistics are good but without personal look you might get mistaken - there are plenty good pockets in bad neighborhoods and vise versa