Doug was born and raised on the family farm. He graduated from Faulkton High School and then attended SDSU. After school, Deiter returned home and married his wife, Sandy. Doug started farming with his father and currently is in a partnership with his brother, Roger, and son, Kevin. Deiter Farms is a fifth Generation Farm and they raise corn, wheat, and soybeans. Doug has served on the township board, church board, school board, and is a current member of Our Savior Lutheran Church. Doug and his wife have four children and 12 grandchildren.