Government in Castaic, CA Los Angeles County Parks31230 Castaic RdCastaic, CA, 913846617758865Government Offices Los Angeles County Parks32132 Castaic Lake DrCastaic, CA, 913846612574050Government County ParishLa Fitness North County Correctional Facility29340 The Old RdCastaic, CA, 913846612957851Correctional FacilitiesCorrectional FacilityCounty JailDetention CenterFederal PrisonGovernment Offices Show MoreSee AlsoGovernment OfficesCommunity ServicesCounty & Parish GovernmentFederal Government