There are definately more nudists than are counted. Many people practice home nudity that are not counted. As also stated, there are many who practice home nudity that do not consider themselves nudists. It's just a way of life i.e, choosing to remain nude after a shower in the evenings, daytime, etc. Many choose to remain nude after undressing when they return back home from work, "naked" weekends, etc, but they will not participate in social nudism if given the chance. And there are nudists such as myself who do not join any clubs, but call myself a nudist because it is a preferred way of life whenever possible, socially or only at home.