Law Enforcement Agencies in Oceanside, CA CA › San Diego County Agencies serving the city of Oceanside in CA. Agency Types in Oceanside Campus Police 1 agencies Federal 1 agencies Harbor Police 1 agencies Municipal Police 1 agencies All Agencies in Oceanside, CA Homeland Security Investigations (HSI) San Diego County Mira Costa Cmnty College San Diego County Oceanside Harbor San Diego County Oceanside Police Department San Diego County
