American Mensa fact sheet

Fact Sheet

Here are just a few facts about American Mensa and its membership.  Additional information is available upon request.


Mensa is an international society in which the only qualification for membership is a score in the top 2 percent of the general population on an accepted, standardized intelligence test.

There are two ways to qualify for Mensa. A person may give evidence of a score in the top 2 percent of the general population on any of more than 200 tests that Mensa accepts for membership. A person may also take the Mensa Admission Test. Get more information about prior evidence and testing.

More than six million Americans are eligible for membership in Mensa. One in 50 people qualifies for Mensa membership.

As of March 31, 2011, American Mensa had more than 57,000 members.

American Mensa has 132 local chapters. Each chapter plans a wide variety of activities ranging from guest speakers to socials to game nights. Some local chapters meet on a monthly basis and others plan activities almost daily.

American Mensa’s youngest member is 2 years old; the oldest is 102.

The general membership of American Mensa is 65 percent male and 35 percent female.The leadership of American Mensa is 50 percent male and 50 percent female.

Mensa’s constitution outlines the organization’s three purposes. They are:

  • To identify and foster human intelligence for the benefit of humanity.
  • To encourage research into the nature, characteristics and uses of intelligence.
  • To provide a stimulating intellectual and social environment for its members.

A few of American Mensa’s most famous members are actress Geena Davis, actor Alan Rachins and columnist Marilyn Vos Savant.

The word mensa has a triple meaning in Latin of “mind, table, month,” which suggests a monthly meeting of great minds around a table.

The National Office of American Mensa is in Arlington, Texas. The office can be contacted by calling 817/607-0060, emailing or writing to 1229 Corporate Drive West, Arlington TX 76006.