Tracy O. King graduated from Carrizo Springs High School, attended Southwest Texas Junior College, Sul Ross State University and Texas A&M University, where he earned a Bachelor of Science in Agricultural Engineering. In 1983 Representative King took a job with the Beltone Hearing Aid Center in San Antonio and soon after moved to Uvalde to open a branch office there. He later purchased the Beltone Hearing Aid Center and owned and operated it until 2008 when he sold the business to spend more time with his family.
Representative King has always been active in public service, a former member of the Board of Trustees for the First United Methodist Church and a past president of both the Kiwanis Club and the Texas Hearing Aid Association. He was elected to the Texas House of Representatives in November 1994 and is currently serving his ninth term. He is the Chairman of the powerful House Agriculture and Livestock Committee and a member of the Natural Resources Committee. He also serves as a member of the Edwards Aquifer Legislative Oversight Committee and the Energy Council.
Representative King is married to the former Cheryl Baker of Hondo and they are the proud parents of two children, Katelyn Marie King and Clayton Baker King.