How many languages aren't here? Well, there's almost 5000 living languages listed in Ruhlen's volume; I have numbers for about 83% of them, so there's at least a thousand more. (If the math doesn't seem to work out, note that I have plenty of dialects and conlangs not included in Ruhlen's list.) There are about 200 languages with more than a million speakers, all of which are in the list.