The Denison Police Department is currently staffed with thirteen sworn full time officers and eight civilian employees. The department is lead by Chief Rod Bradley. Chief Bradley joined the department in 1981 as a patrol officer and served as a patrol sergeant and Asst. Chief prior to his appointment as Chief of Police in June of 1992. The patrol staff is comprised of four patrol sergeants; Sgt. John Emswiler, Sgt. Alison Dorhout, Sgt. Ben Lefeber, & Sgt. Jeremy Behrens, and eight patrol officers.

In addition to providing police protection throughout the city the police department also staffs and manages the County-Wide E-911 Center. The Communications Center is the only public service answering point in Crawford County and is responsible for dispatching the Denison, Dow City, Manillla, and Charter Oak police departments, the Crawford County Sheriffs Office, eight fire departments and their respective EMS first responder personnel, and the Crawford County Memorial Hospital EMT/Paramedic Ambulance Service. The Communications Center is staffed by four full-time and three part-time communication operaters.