On June 24, 1921, the 52nd General Assembly of the State of Illinois authorized the Department of Public Works and Buildings to hire a "sufficient number of State Highway Patrol Officers to enforce the provisions of the Motor Vehicle Laws." The Illinois State Police was officially created in 1922 and today, comprised of sworn personnel and civilians totaling more than 3,000, is one of the most modern and efficient police organizations in the country.
Over the years, the Illinois State Police has continually changed in size and organizational structure to provide an increased number of services in the most efficient manner to the people of Illinois. These services are implemented by the Office of the Director through the Divisions of Operations, Forensic Services, Internal Investigation and Administration.
Since its inception, the Illinois State Police has fostered and served with a reputation for integrity, service and pride. Illinois State Police functions include protecting life and property, enforcing both criminal laws and motor vehicle safety laws, responding to emergencies and disasters and providing a myriad of diverse specialized services to both the public and the criminal justice community.