Tim Dempsey is a retired criminal justice professional and native of Omaha. He graduated from Omaha Central High School, and holds a Bachelor of Science degree in Criminal justice with a minor in Education from the University of Nebraska at Omaha (UNO). Dempsey also earned a Master's degree in Public Administration from UNO. Teaching has always been his avocation. For more than twenty-five years, Dempsey served as an adjunct instructor for the University of Nebraska at Omaha, College of Saint Mary, and Metropolitan Community College. Tim spent twenty-seven years with the Douglas County Sheriff's Department and as well as Department of Corrections. He spent the last seven years of his career as Elkhorn's police chief.
Before starting his law enforcement career, Dempsey worked for the Omaha Public Schools in several capacities including working with youth and coaching at Omaha's Technical High School. Over the years, he has served on numerous boards and is a current member of Nebraska's Crime Commission, Juvenile Justice Coalition, and the Douglas County Sheriff's Merit Commission. Tim enjoys the study of local and State history and has published two books.