There are approximately 5 million members worldwide, mostly in the United States and other English-speaking countries. With adherents in almost every nation where Freemasonry is not officially banned, it forms the largest secret society in the world. There is no central Masonic authority; jurisdiction is divided among autonomous national authorities, called grand lodges, and many concordant organizations of higher-degree Masons. In the United States and Canada the highest authority rests with state and provincial grand lodges. Custom is the supreme authority of the order, and there are elaborate symbolic rites and ceremonies, most of which utilize the instruments of the stonemason—the plumb, the square, the level, and compasses—and apocryphal events concerning the building of King Solomon's Temple for allegorical purposes.
The principles of Freemasonry have traditionally been liberal and democratic. Anderson's Constitutions (1723), the bylaws of the Grand Lodge of England, which is Freemasonry's oldest extant lodge, cites religious toleration, loyalty to local government, and political compromise as basic to the Masonic ideal. Masons are expected to believe in a Supreme Being, use a holy book appropriate to the religion of the lodge's members, and maintain a vow of secrecy concerning the order's ceremonies.
The basic unit of Freemasonry is the local Blue lodge, generally housed in a Masonic temple. The lodge consists of three Craft, Symbolic, or Blue Degrees: Entered Apprentice (First Degree), Fellow Craft (Second Degree), and Master Mason (Third Degree). These gradations are meant to correspond to the three levels—apprentice, journeyman, and master—of the medieval stonemasons' guilds. The average Mason does not rise above Master Mason.
If he does, however, he has the choice of advancing through about 100 different rites, encompassing some 1,000 higher degrees, throughout the world. In the United States, the two most popular rites are the Scottish and the York. The Scottish Rite awards 30 higher degrees, from Secret Master (Fourth Degree) to Sovereign Grand Inspector General (Thirty-third Degree). The York Rite awards ten degrees, from Mark Master to Order of Knights Templar, the latter being similar to a Thirty-third Degree Scottish Rite Mason.
Other important Masonic groups are the Prince Hall Grand Lodge, to which many African-American Masons belong; the Veiled Prophets of the Enchanted Realm (the "fraternal fun order for Blue Lodge Masons"); and the Ancient Arabic Order of the Nobles of the Mystic Shrine (Thirty-second degree Masons who, as the Shriners, are noted for their colorful parades and support of children's hospitals; they were established as a Masonic social organization in 1872). There are also many subsidiary Masonic groups, including the Order of the Eastern Star, limited to Master Masons and their female relatives; De Molay, an organization for boys; and Job's Daughters and Rainbow, two organizations for girls. Many of the orders maintain homes for aged members.