US Law Enforcement Agencies

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Location: United States

United States Law Enforcement Agencies

Types of Law Enforcement Agencies

There are three basic categories of law enforcement agencies: local, state, and federal.

• Local law enforcement agencies include police and sheriff departments, and local service facilities.
• State agencies include the state or highway patrol.
• Federal agencies include a wide range of law enforcement agencies to maintain law and public order related to matters affecting the country as a whole. While the majority of federal law enforcement employees work for the departments of Justice and Homeland Security, there are dozens of other federal law enforcement agencies under other executive departments, as well as under the legislative and judicial branches of the federal government.

There are agencies whose mission is to provide a law enforcement function and there are also agencies who have a law enforcement department or component within their larger agency.

Local Law Enforcement Agencies:

• City Police Department
• County Sheriffs Office
• District Attorneys’ Office Investigators
• Airport Police
• Harbor Police
• Hospital Police
• Housing Authority Police
• School District Police
• University Police
• Transit Authority Police

List of local law enforcement agencies in your state: Local Law Enforcement Agencies

State Law Enforcement Agencies:

• The types of names of law enforcement agencies can vary greatly from state to state. Most states have a state police department of highway patrol. Some have a state bureau of investigations.

List of state law enforcement agencies by state: State Law Enforcement Agencies

Federal Law Enforcement Agencies:

• U.S. Department of Justice

• Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF)
• Drug Enforcement Administration (DEA) (since 1973)

• Bureau of Narcotics and Dangerous Drugs (1968–73)

• Federal Bureau of Narcotics (1930–68)

• Bureau of Drug Abuse Control (1966–68)

• Federal Bureau of Investigation (FBI)

• Bureau of Investigation (BOI) (1908–35)

• Federal Bureau of Prisons (BOP)
• U.S. Marshals Service (USMS) official website explore WikiTree US Marshals Category

• U.S. Department of Homeland Security

• Federal Protective Service (FPS)
• U.S. Coast Guard Police (CGPD)
• Coast Guard Investigative Service (CGIS)
• U.S. Customs and Border Protection (CBP)
• U.S. Immigration and Customs Enforcement (ICE)
• U.S. Secret Service (USSS)

• U.S. Department of Agriculture

• U.S. Forest Service Law Enforcement and Investigations
• Office of Inspector General

• U.S. Department of Commerce

• National Oceanic and Atmospheric Administration Fisheries Office of Law Enforcement

• U.S. Department of Defense

• Defense Criminal Investigative Service (DCIS)
• Pentagon Force Protection Agency
• Defense Logistics Agency Police

Department of the Army

• U.S. Army Criminal Investigation Division (Army CID)
• U.S. Army Military Police Corps
• U.S. Army Counterintelligence (ACI)
• Department of the Army Civilian Police (DACP)
• Department of the Army Civilian Security Guards (DASG)

Department of the Navy

• Naval Criminal Investigative Service (NCIS)
• Office of Naval Intelligence Police (ONI Police)
• Marine Corps Provost Marshal's Office

• U.S. Marine Corps Criminal Investigation Division (USMC CID)

• U.S. Marine Corps Civilian Police

Department of the Air Force

• U.S. Air Force Office of Special Investigations (AirForce OSI)
• U.S. Air Force Security Forces
• Department of the Air Force Police

• U.S. Department of Education - Office of the Inspector General (OIG)
• U.S. Department of Health and Human Services

• Food and Drug Administration

• Office of Criminal Investigations

• U.S. Department of the Interior

• Bureau of Indian Affairs Police
• Bureau of Land Management Office of Law Enforcement & Security
• National Park Service

• National Park Service Rangers
• U.S. Park Police

• U.S. Fish and Wildlife Service Office of Law Enforcement

• U.S. Department of State - Bureau of Diplomatic Security

• Diplomatic Security Service (DSS)

• U.S. Department of Transportation

• Federal Aviation Administration (FAA)
• National Highway Traffic Safety Administration, Office of Odometer Fraud Investigation

• U.S. Department of the Treasury

• Internal Revenue Service, Criminal Investigation (IRS-CI)
• Office of the Treasury Inspector General for Tax Administration (TIGTA)
• Office of the Special Inspector General for the Troubled Asset Relief Program (SIGTARP)
• Office of the Special Inspector General for Pandemic Recovery (SIGPR)
• United States Mint Police (USMP)
• Bureau of Engraving and Printing Police (BEP Police)
• U.S. Department of Veterans Affairs Police

• Central Intelligence Agency - Security Protective Service (CIA SPS)
• Federal Reserve Police
• Library of Congress Police (dissolved 2009)
• National Security Agency Police (NSA Police)
• Smithsonian National Zoological Park Police
• U.S. Capitol Police (USCP)
• U.S. Environmental Protection Agency, Office of Inspector General

• U.S. Postal Inspection Service (USPIS)
• U.S. Postal Service Office of Inspector General (USPS OIG)
• U.S. Probation and Pretrial Services System (USPO)
• U.S. Supreme Court Police

• OFFICE OF INSPECTOR GENERALS

• U.S. Agency for International Development, Office of Inspector General
• U.S. Department of Agriculture, Office of Inspector General
• U.S. Department of Commerce, Office of Inspector General
• U.S. Department of Defense, Office of Inspector General
• U.S. Department of Education, Office of Inspector General
• U.S. Department of Energy, Office of Inspector General
• U.S. Department of Health & Human Services, Office of Inspector General
• U.S. Department of Homeland Security, Office of Inspector General
• U.S. Department of Housing & Urban Development, Office of Inspector General
• U.S. Department of Interior, Office of Inspector General
• U.S. Department of Justice, Office of Inspector General