Again, without the Pew Research Center weighing in, the answer can only be anecdotal.
To answer your topic question, "Is Tarot used more by women than men?", I'd say likely not: in those places where the playing of Tarot is a continuous tradition, it is often a "man's game" - played for stakes in public. Among all the friend's I've taught to play, the males have taken it up with much more enthusiasm.
Within your post, you say, "tarot *readers*" rather than "tarot *users*" - there, my own experience does lean toward more woman. Tarot reading seems "new-agey" - and I don't know as many males into that sort of thing. If they lean in that direction at all, they're more likely to be either be pagan reconstructionists and thus operating in a "pre-tarot" framework; to favor less "subjective" means of divination like astrology or geomancy; or else they're occultists, and, as Chiriku said, using tarot for ritual purposes, not to "read for other people."
Everything Chiriku said seems reasonable to me.