Law Enforcement Agencies in Castle Rock, CO CO › Douglas County Agencies serving the city of Castle Rock in CO. Agency Types in Castle Rock Coroners 1 agencies County Jails 1 agencies Municipal Police 1 agencies Sheriff 1 agencies State Police 2 agencies All Agencies in Castle Rock, CO Castle Rock Police Department Douglas County Colorado State Patrol Douglas County Colorado State Patrol Douglas County Douglas County Coroners Office Douglas County Douglas County Jail Douglas County Douglas County Sheriffs Office Douglas County
