Depending on who you listen to it's 1) 30+ (Church of All Worlds chartered w/ IRS & Janet & Stewart Farrar start a coven together, 1970), 2) 40+ (New Reformed Order of the Golden Dawn, & the Church of All Worlds, both founded 1962), 3) 50-60 (Long Island Church of Aphrodite founded 1938) 4) @ 110-120 (let's all hear it for the Golden Dawn founded 1888 - William Butler Yeats was a member), or 5) 140 years (Theosophical Society founded 1860's, though this one's a real stretch)