The Crestwood Police Department is comprised of a Chief, Commanders, Sergeants, Detectives, Patrol Officers and Community Service Officers. The Investigative and Patrol Divisions work together in enforcing both the Illinois Compiled Statutes and the Village of Crestwood Municipal Code. The Crestwood Police Department is part of the South Suburban Major Crimes Task Force, Cook County Gang Crimes and Narcotics Unit, Illinois Law Enforcement Alarm System and the Mobile Field Force.