What religion ranks highest in frequency of religious attendance?
A sociological comparative study by the Pew Research Center found that Jehovah's Witnesses in the United States ranked highest in statistics for getting no further than high school graduation, belief in God, importance of religion in one's life, frequency of religious attendance, frequency of prayers, frequency of Bible reading outside of religious services, belief their prayers are answered, belief that their religion can only be interpreted one way, belief that theirs is the only one true faith leading to eternal life, opposition to abortion, and opposition to homosexuality. In the study, Jehovah's Witnesses ranked lowest in statistics for having earned a graduate degree and interest in politics.
Freemasonry, as it exists in various forms all over the world, has a membership estimated by the United Grand Lodge of England at around six million worldwide. The fraternity is administratively organised into independent Grand Lodges (or sometimes Grand Orients), each of which governs its own Masonic jurisdiction, which consists of subordinate (or constituent) Lodges. The largest single jurisdiction, in terms of membership, is the United Grand Lodge of England (with a membership estimated at around a quarter million). The Grand Lodge of Scotland and Grand Lodge of Ireland (taken together) have approximately 150,000 members. In the United States total membership is just under two million.