In 1974, Hill College opened an extension center in Cleburne, Texas, located in Johnson County. Since this time, Cleburne and Johnson County have experienced steady growth and so has the college. The campus was initially located on West Henderson Street in Cleburne at the site of the old Johnson County fair grounds.
In 1987, more than 75,000 square feet of warehouse space on Westhill Street was converted into a much needed occupational center. That space was used as the automotive technology, welding and air conditioning/ refrigeration center.
Today, the Johnson County Campus consists of 32 acres of land donated by Tolbert and Margaret Mayfield overlooking Lake Cleburne, includes six buildings and has more than 1,000 students enrolled in both day and night classes.