Mensa International - Organisational Structure

Organisational Structure

Mensa International consists of more than 110,000 members in 50 national groups. Individuals who live in a country with a national group join the national group, while those living in countries without a recognised chapter may join Mensa International directly. The two largest national groups are American Mensa, with more than 56,000 members, and British Mensa, with about 23,500 members. Larger national groups are further subdivided into local groups. For example, American Mensa has 134 local groups, with the largest having over 2,000 members and the smallest having fewer than 100.

Members may form Special Interest Groups (SIGs) at international, national, and local levels; these SIGs represent a wide variety of interests, both commonplace and obscure, ranging from motorcycle clubs to entrepreneurial cooperations. Some SIGs are associated with various geographic groups, whereas others act independently of official hierarchy. There are also electronic SIGs (eSIGs), which operate primarily as e-mail lists, where members may or may not meet each other in person.

The Mensa Foundation, a separate charitable U.S. corporation, edits and publishes its own Mensa Research Journal, in which both Mensans and non-Mensans are published on various topics surrounding the concept and measure of intelligence. The national groups also issue periodicals, such as Mensa Bulletin, the monthly publication of American Mensa, and Mensa Magazine, the monthly publication of British Mensa.