AAIDD is a membership organization, governed by a Board of Directors who are elected by the membership. The geographical components of the Association are:
- Regional, state, and provincial Chapters.
- The Assembly of Regions, which represents 10 geographical regions of North America.
The purpose of Chapters is to promote the interests of the Association and the Association’s activities. A Chapter may also include in its mission other important elements that demonstrate its unique contributions and aspirations related to the overall goals of the Association.
The purpose of Regions is to coordinate geographic activities of the Association and to promote the interests of the Association and the Association’s activities.
The Assembly of Regions
The Assembly meets at least annually (typically at the Association's annual meeting), responds to requests from the Board, serve in an advisory capacity to the Board, and may make recommendations to the Board.
Throughout North America, AAIDD members automatically become members of the Chapter and Region in which they are located. Some, but not all Chapters and Regions have websites. Click on their links for more information:
Region 1 Northwest (no regional structure)
- Alaska, British Columbia, Hawaii, Idaho, Northwest Territory, Oregon, Washington, Yukon Territory
Region 2 West Coast
Region 4 Mountain States
- Alberta, Arizona, Colorado, Montana, New Mexico, Saskatchewan, Utah, Wyoming
Region 5 South Central
Region 6 Great Lakes
Region 7 Southeastern (no regional structure)
- Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, Puerto Rico, South Carolina, Tennessee, Virgin Islands
Region 8 North Central
- Iowa, Manitoba, Minnesota, Nebraska, North Dakota, South Dakota
Region 9 Mideastern
- Bermuda, Delaware, District of Columbia, Maryland, New Jersey, Pennsylvania, Virginia, West Virginia
Region 10 Northeastern
- Connecticut, Maine, Massachusetts, New Brunswick, New Hampshire, New York, Newfoundland, Quebec, Nova Scotia, & Prince Edward Island, Rhode Island, Vermont
*There is no Region 3; Regions 1 & 3 merged long ago.