High Intelligence
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- American Mensa
- National chapter of Mensa. Includes news, events, membership information, and directory of local chapters.
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- American Mensa - Region 3
- Great Lakes and Ohio Valley Region: includes Ohio, Michigan, Kentucky, West Virginia, Western Upstate New York, and Western Pennsylvania.
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- American Mensa - Region 6
- Southwest Region: includes Arkansas, Louisiana, New Mexico, Oklahoma, and Texas.
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- American Mensa - Region 9
- Far West Region: includes Arizona, Hawaii, Utah, and the southern half of California and Nevada.
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- Chicago Area Mensa
- Includes activities and events calendar, scholarship program, and contacts. Events are held in the Chicagoland area including northern Indiana.
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- Iowa-Illinois Mensa
- For members primarily in eastern Iowa and western Illinois, including the Quad Cities area. Provides calendar of events and a members-only page.
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- Ford Worth Mensa
- Fort Worth, Texas and the surrounding area (with a zip code that begins with "76").
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- Gulf Coast Mensa
- Gulf Coast Mensa encompasses southeast Texas, including Houston, and consists of over 900 members.
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- Memphis Mensa
- Richmond area MENSA's home page, with information about the local group, lists of upcoming events, and contact names and addresses.
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- Lehigh Valley/Pocono Mensa
- Local chapter of American Mensa, Ltd. Includes a calendar of events, officer profiles and links to related sites.