The Oakland Police Department (OPD) is a law enforcement agency responsible for policing the city of Oakland, California, United States. As of May 2021, the department employed 709 sworn officers and 371 civilian employees. The department is divided into 5 geographical divisions policing Oakland's 78 square miles and population of 420,000. The OPD receives 550,000 annual calls for service, and responds to over 250,000 law enforcement incidents.