I've added some more topics. I don't know if they're the broadest and most important, though. In many cases, I'm sure they're not, but I don't know which ones would be so considered. Please, please check and edit the entries in your areas of expertise. See talk:Wikipedia arranged by topic.
... 17.0% have a female householder with no husband present, and 15.9% are non-families. 13.0% of all households are made up of individuals and 5.2% have someone living alone ...