Bill was born and raised in Evanston, Illinois. He attended the University of Illinois with a four year break to serve in the United States Marine Corps.
He works in the family business, O'Neil Industries, a holding company of national commercial general contractors and serves as Chairman of the Board. He was a past board member of the Landmarks Preservation Council of Illinois and a recipient of the Spirit of Life Award from the City of Hope.
Bill is married to Janet and they have four children and six grandchildren. They moved full time to Jackson in 2011 because of the beauty of the landscape and the friendliness of the people. Bill is inspired by the visual arts and music and is an avid amateur photographer.