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