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.
... of 468.
Geography
Northampton is located at 40°52'47" North, 72°41'49" West (40.879853, -72.696948)1.
According to the United States Census Bureau, the ...