Law Enforcement Agencies in Vermillion, SD SD › Clay County Agencies serving the city of Vermillion in SD. Agency Types in Vermillion Campus Police 1 agencies Coroners 1 agencies County Jails 1 agencies Municipal Police 1 agencies Sheriff 1 agencies All Agencies in Vermillion, SD Clay County Coroners Office Clay County Clay County Jail Clay County Clay County Sheriffs Department Clay County University of South Dakota Clay County Vermillion Police Department Clay County
