The Rock Island Police Department is divided into three divisions:
  • Field Operations Division - the uniformed patrol division of the Rock Island Police Department.
  • Criminal Investigations Division - the detective bureau of the Rock Island Police Department and is comprised of the Persons/Property Division, Juvenile Investigations Unit, and the Tactical Operations Unit.
  • Technical Services Division - responsible for all record keeping, including evidence retention, sex offender registration, fingerprinting services, abandoned vehicles, animal control, and traffic records.