Henson attended the Ohio State University where he led the nation in scoring as a sophomore in 1972. In the second game of the 1973 season, however, Henson tore the cartilage his knee and was out for the season. LinebackerBruce Elia was converted to starting fullback. In his senior season Henson was hampered by the lingering effects of his knee injury and challenged by sophomore Pete Johnson.
In March 2012, Harold was selected as the Republican nominee for Pickaway County Commissioner by a 67-33 margin. He was unopposed in the November election, where he received over 16,000 votes. He was sworn in and will serve until January 2015. In 2016, Henson was once again nominated as the Republican nominee for Commissioner and defeated his two general election opponents by receiving more than 60 percent of the vote.