The Grant County Museum has a private foundation. The officers of the foundation are W.R. "Witt" Stephens Jr., Chairman, Jim Lancaster, President; Lang Wells, Vice-President; and Carrie Smith, Secretary-Treasurer. Other members include Virginia Harrington, Dr. Jack Irvin, David Jones, Redmond Keisler, Michael Mosley, O.J. Ramick, Dr. Bob Rushing, Robert A. Simpson, Dr. Bob Slaughter, Bobby Taylor, W. Jackson Williams, Mary Beth Glover-Wilson.
The GCM Foundation has a 501-C-3 IRS designation.