Law Enforcement Agencies in Clinton, IL IL › De Witt County Agencies serving the city of Clinton in IL. Agency Types in Clinton Coroners 1 agencies County Jails 1 agencies Municipal Police 1 agencies Sheriff 1 agencies All Agencies in Clinton, IL Clinton Police Department De Witt County Dewitt County Coroners Office De Witt County Dewitt County Jail De Witt County Dewitt County Sheriffs Department De Witt County
