The Administration Bureau consists of the Internal Affairs and Training departments of the police department.

The Office of Internal Affairs is under the direct supervision of the Chief of Police. With addition of the Joplin City Jail and the Dispatch Center in recent years, the Joplin Police Department has almost doubled in size in the number of personnel for which it is responsible. Due to this increase in size, both an Internal Affairs Sergeant and Corporal share the responsibility of the investigations they conduct.

The Training Department is responsible for both an in-house academy and field training officer program once an officer has obtained a license from the State of Missouri as a Missouri Law Enforcement Officer.