According to the US Bureau of Justice Statistics' 2008 Census of State and Local Law Enforcement Agencies, the District has six local law enforcement agencies employing 4,262 sworn police officers, about 722 for each 100,000 residents. This is the highest proportion of police officers to citizens of any state or territory.[1]
Metropolitan Washington Airports Authority Police (jurisdiction actually falls within specific locations in VA [Reagan National and Dulles airports]; formerly FAA Police)
United States Park Police (national parks federal police for the National Mall, monuments, parkways, and all national park service properties in D.C and surrounding regions; several hundred officers; shares jurisdiction with D.C. Metropolitan Police in addition to exercising federal authority)
Humane Law Enforcement Department of the Humane Rescue Alliance[2] (charted by Congress in 1870 to enforce the Districts anti-cruelty laws, formerly known as the Washington Humane Society Law Enforcement)
Federal police agencies with a uniformed presence in District of Columbia area
The majority of federal law enforcement agencies have some type of jurisdiction and/or headquarter offices in the District of Columbia; however, some are more overt than others.
Armed Forces Retirement Home Police (located in northwest District of Columbia; an independent, executive-level federal agency with a force of fewer than a dozen police officers and investigators; formerly known as the United States Sailor's and Airman's Home and the Soldier's Home; established in 1834)[citation needed]
District of Columbia National Guard Military Police/Security Forces, if any (unique in that the DC Guard always answers to the President rather than to a governor)
United States Pentagon Police (Pentagon Police also have jurisdiction at Department of Defense-leased property throughout the National Capital Region, and at the US Military Court of Appeals in District of Columbia)
^2008 Census of State and Local Law Enforcement Agencies, by Brian A Reaves, US Department of Justice, Office of Justice Programs, Bureau of Justice Statistics, July 2011