Pacific Intermountain Region: includes Alaska, Washington, Oregon, Utah, Idaho, Montana, Nevada, and northern California.
North Central Region: includes Indiana, Illinois, Iowa, Minnesota, St. Louis Area, and Wisconsin.
Northeast Region: from Maine to Northern New Jersey and all of New York State except the Buffalo area.
National chapter of Mensa. Includes news, events, membership information, and directory of local chapters.
Southwest Region: includes Arkansas, Louisiana, New Mexico, Oklahoma, and Texas.
Great Lakes and Ohio Valley Region: includes Ohio, Michigan, Kentucky, West Virginia, Western Upstate New York, and Western Pennsylvania.
Middle Atlantic Region: covering Delaware, District of Columbia, Maryland, New Jersey, Pennsylvania, and Virginia.
Southeast Region: includes Alabama, Georgia, Mississippi, North Carolina, South Carolina and Tennessee.
Far West Region: includes Arizona, Hawaii, Utah, and the southern half of California and Nevada.
For members primarily in eastern Iowa and western Illinois, including the Quad Cities area. Provides calendar of events and a members-only page.