The actual number of Wiccans worldwide is unknown, and it has been noted that it is more difficult to establish the numbers of members of Neopagan faiths than many other religions due to their disorganised structure. However, Adherents.com, an independent website which specialises in collecting estimates of world religions, cites over thirty sources with estimates of numbers of Wiccans (principally from the USA and the UK). From this, they developed a median estimate of 800,000 members. As of 2016, Doyle White suggested that there were "hundreds of thousands of practising Wiccans around the globe".