Law Enforcement Agencies in Mount Vernon, OH OH › Knox County Agencies serving the city of Mount Vernon in OH. Agency Types in Mount Vernon Campus Police 1 agencies Coroners 1 agencies County Jails 1 agencies Municipal Police 1 agencies Sheriff 1 agencies All Agencies in Mount Vernon, OH Knox County Coroners Office Knox County Knox County Jail Knox County Knox County Sheriffs Office Knox County Mount Vernon Nazarene University Knox County Mount Vernon Police Department Knox County
