The New York City Police Department (NYPD), officially the City of New York Police Department, is the primary law enforcement agency within New York City. Established on May 23, 1845, the NYPD is the largest, and one of the oldest, municipal police departments in the United States.
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 Philadelphia Police Department is the police agency responsible for law enforcement and investigations within the City of Philadelphia, Pennsylvania. The PPD is one of the oldest municipal police agencies, fourth largest police force and sixth largest non-federal law enforcement agency in the United States. Since records were first kept in 1828, at least 289 PPD officers have died in the line of duty.
The San Francisco Police Department (SFPD) is the municipal law enforcement agency of the City and County of San Francisco, as well as the San Francisco International Airport in San Mateo County. In 2000, the SFPD was the 11th largest police department in the United States.
The Victoria Police Department (VicPD) is the municipal police force for the City of Victoria and the Township of Esquimalt, British Columbia, Canada. It is the oldest municipal police department in Canada west of the Great Lakes, the first Canadian law enforcement agency to deploy tasers and VicPD created the first digital forensic unit in the country. They are also one of the few police departments in Canada to use the G36 rifle.
The Jacksonville Sheriff's Office (JSO) is a joint city-county law enforcement agency, which has primary responsibility for law enforcement, investigation, and corrections within the consolidated City of Jacksonville and Duval County, Florida, United States. Duval County includes the incorporated cities of Jacksonville, Atlantic Beach, Baldwin, Jacksonville Beach, and Neptune Beach; the beach cities have their own police departments as well.
The Port Authority of New York and New Jersey Police Department, or Port Authority Police Department (PAPD), is a law enforcement agency in New York and New Jersey, the duties of which are to protect and to enforce state and city laws at all the facilities, owned or operated by the Port Authority of New York and New Jersey (PANYNJ), the bi-state agency running airports, seaports, and many bridges and tunnels within the Port of New York and New Jersey. Additionally, the PAPD is responsible for other PANYNJ properties including three bus terminals, the World Trade Center in Lower Manhattan, and the PATH train system. The PAPD is the largest transit-related police force in the United States.
The Miami Police Department (MPD), also known as the City of Miami Police Department, is a full-service municipal law enforcement agency serving Miami, Florida. MPD is the largest municipal police department in Florida. MPD officers are distinguishable from their Miami-Dade Police Department counterparts by their blue uniforms and blue-and-white patrol vehicles.
The Columbus Division of Police (CPD) is the primary law enforcement agency for the city of Columbus, Ohio, in the United States. It is the largest police department in Ohio, and among the twenty-five largest in the United States. It is composed of twenty precincts and numerous other investigative and support units. Chief Elaine Bryant assumed leadership of the Division in 2021. Special units of the Columbus Division of Police include a Helicopter Unit, Canine Unit, Mounted Unit, Community Response Teams, Marine Park Unit, and Special Weapons and Tactics Team (SWAT).
The Louisville Metro Police Department (LMPD) began operations on January 6, 2003, as part of the creation of the consolidated city-county government in Louisville, Kentucky, United States. It was formed by the merger of the Jefferson County Police Department and the Louisville Division of Police. The Louisville Metro Police Department has been headed by Jacquelyn Gwinn-Villaroel since January 2, 2023. LMPD divides Jefferson County into eight patrol divisions and operates a number of special investigative and support units. The LMPD is currently negotiating a consent decree with the United States Department of Justice (DOJ) subsequent to a 2023 investigation by the DOJ that concluded that the LMPD engaged in a decades long pattern of civil rights abuses.
Police departments in the University of California system are charged with providing law enforcement to each of the system's campuses.
The California State University police departments(CSUPD) (known within the California State University system as the Cal State Police or University Police) are the police departments of the California State University system. Their police officers are duly sworn peace officers of the State of California, as established by section 830.2(c) of the California Penal Code. There are a total of 23 campuses in the California State University system, each with their own police department. Each csu' police department has its own chain of command, however some of the policies are system-wide.
The Sacramento County Sheriff's Office (SSO), is a local law enforcement agency that serves Sacramento County, California. It provides general-service law enforcement to unincorporated areas of Sacramento County, as well as incorporated cities within the county that have contracted with the agency for law-enforcement services. Currently only Rancho Cordova, and Isleton has such a contract with the department since the Citrus Heights and Elk Grove Police Departments assumed all police authority and responsibility for their communities in 2006. It also holds primary jurisdiction over facilities operated by Sacramento County, such as local parks, marinas, and government buildings; provides marshal service for the Sacramento County Superior Court; operates the Sacramento County Jail and the Rio Cosumnes Correctional Center in Elk Grove; and provides services such as laboratories and academy training to smaller law-enforcement agencies within the county. The county sheriff is currently Jim Cooper.
The Metropolitan Police Department – City of St. Louis is the primary law enforcement agency for the U.S. city of St. Louis.
The Bakersfield Police Department (BPD) is the agency responsible for law enforcement within the city of Bakersfield, California, in the United States. It has over 590 officers and professional staff, covering an area of 151.2 square miles (392 km2) serving an urban population of more than 400,000. The current chief of the department, since April 2020, is Greg Terry. The department protects the city, split between two areas and six zones with two stations, the main department headquarters and the west side substation. The department administration is made up of the chief of department, two assistant chiefs, four captains and eleven lieutenants.
The Cleveland Division of Police (CDP) is the governmental agency responsible for law enforcement in the city of Cleveland, Ohio. Karrie Howard is the Director of Public Safety and Dornat "Wayne" Drummond is Chief of Police.
The New York City Police Department (NYPD) is structured into numerous bureaus and units. As a whole, the NYPD is headed by the Police Commissioner, a civilian administrator appointed by the Mayor, with the senior sworn uniformed officer of the service titled "Chief of Department". The Police Commissioner appoints the First Deputy Commissioner as the department's second-in-command and the Chief of Department as the department's highest ranking uniformed officer. The commissioner also appoints a number of deputy and assistant commissioners who do not have operational command and are solely for support and administrative function. The department is divided into twenty bureaus, six of which are enforcement bureaus. Each enforcement bureau is further subdivided into sections, divisions, and units, and into patrol boroughs, precincts, and detective squads. Each bureau is commanded by a bureau chief. There are also a number of specialized units that are not part of any of the bureaus and report to the Chief of the Department.
On July 11, 2016, Randy Lozoya and John Tennis, two Sacramento police officers, attempted to run over, and later shot and killed Joseph Mann, a 51-year-old mentally ill and homeless African-American man armed with a knife.
In the late evening of March 18, 2018, Stephon Clark, a 22-year-old African-American man, was shot and killed in Meadowview, Sacramento, California by Terrence Mercadal and Jared Robinet, two officers of the Sacramento Police Department in the backyard of his grandmother's house while he had a phone in his hand. The encounter was filmed by police video cameras and by a Sacramento County Sheriff's Department helicopter which was involved in observing Clark on the ground and in directing ground officers to the point at which the shooting took place. The officers stated that they shot Clark, firing 20 rounds, believing that he had pointed a gun at them. Police found only a cell phone on him. While the Sacramento County Coroner's autopsy report concluded that Clark was shot seven times, including three shots to the right side of the back, the pathologist hired by the Clark family stated that Clark was shot eight times, including six times in the back.
