For the administration of organ allocation and appropriate geographic representation within the OPTN policy structure, the membership is divided into 11 geographic regions. Members belong to the Region in which they are located. The Regions are as follows:

• Region 1 - Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island
• Region 2 - Delaware, District of Columbia, Maryland, New Jersey, Pennsylvania, Northern Virginia, West Virginia
• Region 3 - Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, Puerto Rico
• Region 4 - Oklahoma, Texas
• Region 5 - Arizona, California, Nevada, New Mexico, Utah
• Region 6 - Alaska, Hawaii, Idaho, Montana, Oregon, Washington
• Region 7 - Illinois, Minnesota, North Dakota, South Dakota, Wisconsin
• Region 8 - Colorado, Iowa, Kansas, Missouri, Nebraska, Wyoming
• Region 9 - New York, Vermont
• Region 10 - Indiana, Michigan, Ohio
• Region 11 - Kentucky, North Carolina, South Carolina, Tennessee, Virginia.