Metropolitan Police Department of the District of Columbia

The Metropolitan Police Department of the District of Columbia (MPDC), more commonly known as the Metropolitan Police Department (MPD), the DC Police, and, colloquially, the DCPD, is the primary law enforcement agency for the District of Columbia, in the United States. With approximately 3,400 officers and 600 civilian staff, it is the sixth-largest municipal police department in the United States. The department serves an area of 68 square miles (180 km²) and a population of over 700,000 people. Established on August 6, 1861, the MPD is one of the oldest police departments in the United States. The MPD headquarters is at the Henry J. Daly Building, located on Indiana Avenue in Judiciary Square across the street from the District of Columbia Court of Appeals and the Superior Court of the District of Columbia. The department's mission is to "safeguard the District of Columbia and protect its residents and visitors with the highest regard for the sanctity of human life". The MPD's regulations are compiled in title 5, chapter 1 of the District of Columbia Code.

The MPD has a broad array of specialized services, including the Emergency Response Team, K9, harbor patrol, air support, explosive ordnance division, homeland security, criminal intelligence, narcotics, and the gun recovery unit. The MPD also operates the Command Information Center (CIC) which monitors hundreds of cameras across the city, license plate readers, ShotSpotter and many other intelligence and surveillance devices.

The MPD has a unique role in that it serves as a local police department, with county, state and federal responsibilities, and is under a municipal government but operates under federal authority. They are responsible for operating the district's sex offender registry, approving all applications for motorcades, protests, demonstrations and other public events, and maintaining the district's firearm registry.