Education
Madison Area Technical College. University of Wisconsin–Madison.
Madison Area Technical College. University of Wisconsin–Madison.
Hilgenberg attended the University of Wisconsin and Madison Area Technical College. He served in the United States Army from 1966 to 1969 during the Vietnam era. In 2010, Hilgenberg announced he would not seek re-election due to health concerns.
He died of prostate cancer on March 27, 2011.
He was a member of the Committees on Insurance, Rural Economic Development, and Small Business. He was the former owner and operator of a commercial printing business and a former member of the Dodgeville School Board.