Fox was born in Canton, Ohio, where he played football at Glenwood High School. He continued to play football while attending Ohio State University, and was a co-captain his senior year along with the only two time Heisman Trophy winner Archie Griffin under the great coach Woody Hayes. He was selected in the 1st round (21st overall) in the 1976 NFL Draft by the Patriots. He was selected to the Pro Bowl in 1980. Fox remained in Foxboro, Massachusetts after he retired in 1987 for 12 years until 1999 when he decided to make Westwood, Massachusetts his new home. Tim currently resides in Hull, Massachusetts and has been there since 2007. Fox has been working for R.R. Donnelley & Sons since 1992 and is currently the Sales Director for the New England region. He has two daughters, Haley and Landin, and one son, Christopher who have all graduated from college.