The Metropolitan Police Department of the District of Columbia (MPDC), more commonly known as the Metropolitan Police Department (MPD) and the DC Police, is the primary law enforcement agency for the District of Columbia, in the United States. With approximately 3,800 officers and 600 civilian staff, it is the sixth-largest municipal police department in the United States. The department serves an area of 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.