Background
Koskan, John M. was born on September 27, 1955 in Winner, South Dakota, United States. Son of Milo Harlan and Juanita Mae (Mitchell) Koskan.
Koskan, John M. was born on September 27, 1955 in Winner, South Dakota, United States. Son of Milo Harlan and Juanita Mae (Mitchell) Koskan.
Bachelor of Science, South Dakota School Mines & Technology, 1977.
Member, School Board, Wood, South Dakot, 1984-1990; member, South Dakot House of Representatives, since 1991; member taxation and transportation committees, South Dakot House of Representatives design engineer, Boeing Aircraft, Wichita, Kansas, 1977-1979; design engineer, Cessna Aircraft Company, Wichita, 1979-1980; design consultant, manufacturer, Piper Advanced Technologies, Wichita, 1980-1981; farmer, rancher, Wood, South Dakot, since 1981.
Married Verna Gale Heying, 1973. Children: Fawn Michelle, Tracy Michael, Joel Mathew, Joni Melissa.