Blackburn has served as Chairman of the Board of Trustees at the Crossnore School, Chairman of the Board of Directors of Cannon Memorial Hospital, Chairman of the Board of Trustees of the Appalachian Regional Healthcare System, Chairman of the Board of Trustees at Appalachian State University, Chairman of the Linville Foundation, Chairman of the Linville Volunteer Fire Department Trust, Chairman of the Cain Scholars Program in Avery County, and a co-founder of the YMCA. In addition, he has been a valued member of the Board of Governors of the University of North Carolina, a director of the Sloop Memorial Hospital, a director of the Watauga Medical Center, and has worked on the United Way of Avery and Watauga Counties, Habitat for Humanity, Humane Society, Hospice of Avery Co., and the Avery high school scholarship and athletic program.