List of U.S. Government Agencies and Departments

Government agencies

Private investigators and private investigation agencies who become involved with cases, especially on a national level, will often interact to some extent with a government agency. In most cases, this will involve searching for government information and records. As a result, private eyes should be familiar with the various departments and agencies and know how to navigate their complexities to get at the info you need.

Following is an alphabetical list of organizations in the United States federal executive, legislative and judicial branches. It is not a comprehensive list, nor will it remain completely accurate, as agencies are shut down and new ones are formed on a regular basis.

We did not provide website links for the same reason. If you’re interested in learn more about a particular branch or department, just do a Google search for the name. In some cases, we provided links to other pages on our website that provide more detailed information on a particular dept.

  • 9-11 Commission (National Commission on Terrorist Attacks upon the United States)
  • Administration on Aging (AOA)
  • Administration for Children and Families (ACF)
  • Administrative Committee of the Federal Register
    Administrative Office of the U.S. Courts
    Advisory Council on Historic Preservation
    African Development Foundation
    Agency for Healthcare Research and Quality (AHRQ)
    Agency for International Development
    Agency for Toxic Substances and Disease Registry
    Agricultural Marketing Service
    Agricultural Research Service
    Agriculture Department (USDA)
    Air Force
    Alcohol and Tobacco Tax and Trade Bureau (Treasury)
    Alcohol, Tobacco, Firearms and Explosives Bureau (DOJ)
    American Battle Monuments Commission
    AMTRAK (National Railroad Passenger Corporation)
    Animal and Plant Health Inspection Service
    Appalachian Regional Commission
    Architect of the Capitol
    Architectural and Transportation Barriers Compliance Board (Access Board)
    Arctic Research Commission
    Armed Forces Retirement Home
    Arms Control and International Security
    Army Corps of Engineers
    Arthritis and Musculoskeletal Interagency Coordinating Committee
    Bankruptcy Courts
    Barry M. Goldwater Scholarship and Excellence in Education Foundation
    Bilingual Education and Minority Languages Affairs Office
    Botanic Garden
    Broadcasting Board of Governors (Voice of America, Radio/TV Marti and more)
    Bureau of Alcohol and Tobacco Tax and Trade (Treasury)
    Bureau of Alcohol, Tobacco, Firearms, and Explosives (Justice)
    Bureau of the Census
    Bureau of Economic Analysis (BEA)
    Bureau of Engraving and Printing
    Bureau of Indian Affairs (BIA)
    Bureau of Industry and Security (formerly the Bureau of Export Administration)
    Bureau of International Labor Affairs
    Bureau of Justice Statistics
    Bureau of Labor Statistics – Bureau of Labor Statistics is responsible for measuring labor market activity, working conditions, and price changes in the economy.
    Bureau of Land Management (BLM)
    Bureau of Prisons
    Bureau of Public Debt
    Bureau of Reclamation
    Bureau of Transportation Statistics
    Census Bureau
    Center for Nutrition Policy and Promotion
    Centers for Disease Control and Prevention (CDC)
    Centers for Medicare & Medicaid Services (formerly the Health Care Financing
    Central Intelligence Agency (CIA)
    Chemical Safety and Hazard Investigations Board
    Chief Financial Officers Council
    Chief Information Officers Council
    Citizens’ Stamp Advisory Committee
    Citizenship and Immigration Services Bureau (formerly Immigration and Naturalization
    Civilian Radioactive Waste Management
    Coalition Provisional Authority (in Iraq)
    Coalition Provisional Authority Inspector General
    Coast Guard
    Commerce Department
    Commission of Fine Arts
    Commission on Civil Rights
    Commission on the Intelligence Capabilities of the United States Regarding Weapons of
    Mass Destruction
    Commission on International Religious Freedom
    Committee for the Implementation of Textile Agreements
    Committee for Purchase from People Who Are Blind or Severely Disabled
    Commodity Futures Trading Commission
    Community Development Office (Agriculture Department)
    Community Oriented Policing Services (COPS)
    Community Planning and Development
    Comptroller of the Currency Office
    Congressional Budget Office (CBO)
    Constitution Center
    Consumer Product Safety Commission (CPSC)
    Cooperative State Research, Education and Extension Service
    Coordinating Council on Juvenile Justice and Delinquency Prevention
    Corporation for National and Community Service
    Council of Economic Advisers
    Council on Environmental Quality
    Court of Appeals for the Armed Forces
    Court of Appeals for the Federal Circuit
    Court of Appeals for Veterans Claims
    Court of Federal Claims
    Court of International Trade
    Customs and Border Protection
    Defense Advanced Research Projects Agency (DARPA)
    Defense Commissary Agency
    Defense Contract Audit Agency
    Defense Contract Management Agency
    Defense Department (DOD)
    Defense Field Activities
    Defense Finance and Accounting Service (DFAS)
    Defense Information Systems Agency (DISA)
    Defense Intelligence Agency
    Defense Legal Services Agency
    Defense Logistics Agency (DLA)
    Defense Nuclear Facilities Safety Board
    Defense Security Cooperation Agency
    Defense Security Service
    Defense Threat Reduction Agency
    Delaware River Basin Commission
    Denali Commission
    Department of Agriculture (USDA)
    Department of Commerce (DOC)
    Department of Defense (DOD)
    Department of Defense Inspector General
    Department of Education (ED)
    Department of Energy (DOE)
    Department of Health and Human Services (HHS)
    Department of Homeland Security (DHS)
    Department of Housing and Urban Development (HUD)
    Department of the Interior (DOI)
    Department of Justice (DOJ)
    Department of Labor (DOL)
    Department of State (DOS)
    Department of Transportation (DOT)
    Department of the Treasury
    Department of Veterans Affairs (VA)
    Disability Employment Policy Office
    Domestic Policy Council
    Drug Enforcement Administration (DEA)
    Economic Analysis, Bureau of
    Economic, Business and Agricultural Affairs (State Department)
    Economic and Statistics Administration
    Economic Development Administration
    Economic Research Service
    Education Department (ED)
    Election Assistance Commission
    Elementary and Secondary Education
    Employee Benefits Security Administration (formerly the Pension and Welfare Benefits Administration)
    Employment and Training Administration (Labor Department)
    Employment Standards Administration
    Endangered Species Committee
    Energy Department (DOE)
    Energy Efficiency and Renewable Energy
    Energy Information Administration
    Enforcement (Treasury Department)
    Engraving and Printing, Bureau of
    Environment, Safety and Health
    Environmental Management (Energy Department)
    Environmental Protection Agency (EPA)
    Equal Employment Opportunity Commission (EEOC)
    Executive Office for Immigration Review
    Export Administration (now the Bureau of Industry and Security)
    Export-Import Bank of the United States
    Fair Housing and Equal Opportunity
    Faith-Based and Community Initiatives Office
    Farm Credit Administration
    Farm Service Agency
    Federal Accounting Standards Advisory Board
    Federal Aviation Administration (FAA)
    Federal Bureau of Investigation (FBI)
    Federal Bureau of Prisons
    Federal Communications Commission (FCC)
    Federal Citizen Information Center (FCIC)
    Federal Consulting Group
    Federal Deposit Insurance Corporation (FDIC)
    Federal Election Commission
    Federal Emergency Management Agency (FEMA)
    Federal Energy Regulatory Commission
    Federal Executive Boards
    Federal Financial Institutions Examination Council
    Federal Financing Bank
    Federal Highway Administration
    Federal Housing Enterprise Oversight
    Federal Housing Finance Board
    Federal Interagency Committee for the Management of Noxious and Exotic Weeds
    Federal Interagency Council on Statistical Policy
    Federal Judicial Center
    Federal Labor Relations Authority
    Federal Laboratory Consortium for Technology Transfer
    Federal Law Enforcement Training Center
    Federal Library and Information Center Committee
    Federal Maritime Commission
    Federal Mediation and Conciliation Service
    Federal Mine Safety and Health Review Commission
    Federal Motor Carrier Safety Administration
    Federal Railroad Administration
    Federal Reserve System
    Federal Retirement Thrift Investment Board
    Federal Trade Commission (FTC)
    Federal Transit Administration
    Federated States of Micronesia
    Financial Management Service (Treasury Department)
    Fish and Wildlife Service
    Food and Drug Administration (FDA)
    Food and Nutrition Service
    Food, Nutrition and Consumer Services
    Food Safety and Inspection Service
    Foreign Agricultural Service
    Foreign Claims Settlement Commission
    Forest Service
    Fossil Energy
    Fulbright Foreign Scholarship Board
    General Accounting Office (GAO)
    General Services Administration (GSA)
    Geological Survey (USGS)
    Global Affairs (State Department)
    Global Communications Office (White House)
    Government Printing Office (GPO)
    Government National Mortgage Association
    Grain Inspection, Packers and Stockyards Administration
    Harry S. Truman Scholarship Foundation
    Health and Human Services Department (HHS)
    Health Resources and Services Administration
    Holocaust Memorial Museum
    Homeland Security Department (DHS)
    House of Representatives
    House Leadership Offices
    House Office of Inspector General
    House Office of the Clerk
    House of Representatives Committees
    House Organizations, Commissions and Task Forces
    House Representatives on the Web
    Housing and Urban Development Department (HUD)
    Illinois and Michigan Canal National Heritage Corridor Commission
    Immigration and Customs Enforcement, Bureau of
    Immigration and Naturalization Service (Bureau of Citizenship and Immigration Services)
    Indian Affairs, Bureau of
    Indian Arts and Crafts Board
    Indian Health Service
    Industrial College of the Armed Forces
    Industry and Security, Bureau of (formerly the Bureau of Export Administration)
    Information Resource Management College
    Institute of Education Sciences
    Institute of Museum and Library Services
    Institute of Peace
    Interagency Alternative Dispute Resolution Working Group
    Interagency Council on Homelessness
    Interagency Electronic Grants Committee
    Inter-American Foundation
    Interior Department
    Internal Revenue Service (IRS)
    International Broadcasting Bureau (IBB)
    International Labor Affairs, Bureau of
    International Trade Administration (ITA)
    James Madison Memorial Fellowship Foundation
    Japan-United States Friendship Commission
    John F. Kennedy Center for the Performing Arts
    Joint Board for the Enrollment of Actuaries
    Joint Chiefs of Staff
    Joint Forces Staff College
    Judicial Circuit Courts of Appeal, by Geographic Location and Circuit
    Judicial Panel on Multidistrict Litigation
    Justice Department
    Justice Programs Office (Juvenile Justice, Victims of Crime, Violence Against Women
    Justice Statistics, Bureau of
    Labor Department (DOL)
    Labor Statistics, Bureau of
    Land Management, Bureau of
    Lead Hazard Control (Housing and Urban Development Department)
    Legal Services Corporation
    Library of Congress
    Marine Corps
    Marine Mammal Commission
    Maritime Administration
    Marketing and Regulatory Programs (Agriculture Department)
    Marshals Service
    Medicare Payment Advisory Commission (formerly the Physician Payment Review
    Commission and the Prospective Payment Assessment Commission)
    Merit Systems Protection Board
    Migratory Bird Conservation Commission
    Mine Safety and Health Administration
    Mineral Management Service
    Minority Business Development Agency
    Missile Defense Agency
    Mississippi River Commission
    Morris K. Udall Foundation: Scholarship and Excellence in National Environmental Policy
    Multifamily Housing Office
    National Aeronautics and Space Administration (NASA)
    National Agricultural Statistics Service
    National AIDS Policy Office
    National Archives and Records Administration (NARA)
    National Bipartisan Commission on the Future of Medicare
    National Capital Planning Commission
    National Cemetery Administration (Veterans Affairs Department)
    National Commission on Libraries and Information Science
    National Commission on Terrorist Attacks Upon the United States (9-11 Commission)
    National Communications System (Homeland Security)
    National Constitution Center
    National Council on Disability
    National Credit Union Administration
    National Defense University
    National Drug Intelligence Center
    National Economic Council
    National Endowment for the Arts
    National Endowment for the Humanities
    National Gallery of Art
    National Guard
    National Highway Traffic Safety Administration
    National Imagery and Mapping Agency
    National Indian Gaming Commission
    National Institute of Justice
    National Institute of Standards and Technology (NIST)
    National Institutes of Health (NIH)
    National Interagency Fire Center
    National Labor Relations Board
    National Laboratories (Energy Department)
    National Marine Fisheries
    National Mediation Board
    National Nuclear Security Administration
    National Ocean Service
    National Oceanic and Atmospheric Administration (NOAA)
    National Park Foundation
    National Park Service
    National Railroad Passenger Corporation (AMTRAK)
    National Reconnaissance Organization
    National Science Foundation
    National Security Agency / Central Security Service
    National Security Council
    National Technical Information Service
    National Telecommunications and Information Administration
    National Transportation Safety Board
    National War College
    National Weather Service
    Natural Resources Conservation Service
    Navajo and Hopi Relocation Commission
    Northern Mariana Islands
    Northwest Power Planning Council
    Nuclear Energy, Science and Technology
    Nuclear Regulatory Commission
    Nuclear Waste Technical Review Board
    Occupational Safety & Health Administration (OSHA)
    Occupational Safety and Health Review Commission
    Office of Compliance
    Office of Federal Housing Enterprise Oversight
    Office of Government Ethics
    Office of Management and Budget (OMB)
    Office of National Drug Control Policy (ONDCP)
    Office of Personnel Management
    Office of Science and Technology Policy
    Office of Scientific and Technical Information
    Office of Special Counsel
    Office of Thrift Supervision
    Overseas Private Investment Corporation
    Pardon Attorney Office
    Parole Commission (Justice Department)
    Patent and Trademark Office
    Peace Corps
    Pension and Welfare Benefits Administration (now the Employee Benefits Security
    Pension Benefit Guaranty Corporation
    Policy Development and Research (Housing and Urban Development Department)
    Political Affairs (State Department)
    Postal Rate Commission
    Postal Service (USPS)
    Postsecondary Education
    Power Administrations
    President’s Commission on Moon, Mars and Beyond
    President’s Commission on the U.S. Postal Service
    President’s Council on Integrity and Efficiency
    President’s Foreign Intelligence Advisory Board
    Presidio Trust
    Public Debt, Bureau of
    Public Diplomacy and Public Affairs (State Department)
    Public Health Preparedness Office
    Public and Indian Housing
    Radio and TV Marti (Español)
    Radio Free Asia (RFA)
    Radio Free Europe/Radio Liberty (RFE/RL)
    Railroad Retirement Board
    Reclamation, Bureau of
    Regulatory Information Service Center
    Rehabilitation Services Administration (Education Department)
    Research, Education and Economics (Agriculture Department)
    Research and Special Programs Administration (Transportation Department)
    Risk Management Agency (Agriculture Department)
    Rural Business-Cooperative Service
    Rural Development
    Rural Housing Service
    Rural Utilities Service
    Saint Lawrence Seaway Development Corporation
    Science Office (Energy Department)
    Secret Service
    Securities and Exchange Commission (SEC)
    Selective Service System
    Senate Committees
    Senate Leadership
    Senators on the Web
    Small Business Administration (SBA)
    Smithsonian Institution
    Social Security Administration (SSA)
    Social Security Advisory Board
    Special Education and Rehabilitative Services
    State Department
    State Justice Institute
    Stennis Center for Public Service
    Student Financial Assistance Programs
    Substance Abuse and Mental Health Services Administration
    Superfund Basic Research Program
    Supreme Court of the United States
    Surface Mining, Reclamation and Enforcement
    Surface Transportation Board
    Susquehanna River Basin Commission
    Tax Court
    Taxpayer Advocacy Panel (TAP)
    Technology Administration
    Tennessee Valley Authority
    Trade and Development Agency
    Trade Policy Staff Committee (House of Representatives)
    Transportation Department (DOT)
    Transportation Security Administration
    Transportation Statistics, Bureau of
    Treasury Department
    Trustee Program (Justice Department)
    U.S. Border Patrol
    U.S. Centennial of Flight Commission
    U.S. Citizenship and Immigration Services
    U.S. Customs and Border Protection
  • U.S. Government Accountability Office – Reports and testimony, decisions and opinions, and policy and publications. See also Government Accountability Office (GAO) Reports Online via GPO Access–GAO’s findings and recommendations that result from its audits, surveys, investigations, and evaluations of federal programs; reports are prepared at the request of congressional committees or members or to fulfilll GAO specifically mandated or basic legislative requirements; includes reports issued since from Oct. 1, 1994.
  • U.S. Government Printing Office – U.S. Govt. Printing Office (GPO) — Most popular government site. Search by branch or topic for official government versions of executive, legislation, and judicial information. Search and retrieve full-text from more than 50 official online databases arranged in an alphabetical list and by branch of government.
  • U.S. Immigration and Customs Enforcement
  • U.S. International Trade Commission
    U.S. Mission to the United Nations
    U.S. National Central Bureau – Interpol (Justice Department)
    U.S. Postal Service
    U.S. Sentencing Commission
    U.S. Trade Representative
    U.S. Virgin Islands
    Unified Combatant Commands (Defense Department)
    Uniformed Services University of the Health Sciences
    Veterans Affairs Department (VA)
    Veterans Benefits Administration
    Veterans Day National Committee
    Veterans’ Employment and Training Service
    Veterans Health Administration
    Vietnam Educational Foundation
    Vocational and Adult Education
    Voice of America (VOA)
    White House
    White House Commission on Presidential Scholars
    White House Commission on the National Moment of Remembrance
    White House Office of Administration
    Women’s Bureau (Labor Department)
    Woodrow Wilson International Center for Scholars
    Worldnet Television


BOT – Bureau of Transportation is responsible for ensuring a fast, safe, efficient, accessible and convenient transportation system that meets our vital national interests and enhances the quality of life of the American people, today and into the future.

CDC – Centers for Disease Control and Prevention works to protect America from health, safety and security threats, both foreign and in the U.S.

Census – U.S. Department of Commerce Bureau of the Census

Congress – U.S. House of Representatives

U.S. Customs – U.S. Customs and Border Protection Service

DOE – U.S. Department of Education

DOE – U.S. Department of Energy

DOT – Department of Transportation

Department of Health & Human Services – U.S. Dept. of Health and Human Services

E-The People – A public forum for democratic and deliberative discussion. The conversations on E The People explore the political issues we see in the news, rejecting the traditional spin and conventional wisdom that tends to fill the airwaves.

EEOC – Equal Employment Opportunity Commission

FDIC – Federal Deposit Insurance Corporation

FEC – Federal Election Commission

Federal Citizen Information Center – For over 35 years, Americans have been contacting the Federal Information Center, now known as the FCIC’s National Contact Center (NCC), to get answers to their questions about their government. Initially, the telephone service was available only via local telephone numbers in key metropolitan areas. But since 1990, the NCC has responded to public inquiries via a nationwide toll-free telephone number, 1 (800) FED-INFO. The number is listed in more than 500 telephone directories around the country, serving the majority of the American public. The NCC responds to thousands of government information requests every business day, either providing the information directly or locating the source of assistance for the caller.

Federal Courts – Access U.S. Courts

FEMA – Federal Emergency Management Agency

FHWA – Federal Highway Administration

FirstGov for Citizens – Citizen Gateway – U.S. General Services Admin. (GSA) — One-stop access to U.S. government information arranged by broad topic: online e-services, locate in-person services, facts/figures about your community, federal benefits, health and safety, government news, recalls, scams and frauds, government sales, and much more.

FirstGov for Seniors – U.S. General Services Admin. (GSA) — One-stop access to U.S. government information for seniors arranged by broad topic: consumer protection, education, jobs and volunteerism, federal and state agencies, health, laws and regulations, retirement and money, taxes, travel and leisure.

FMS – Financial Management Service provides central payment services to federal agencies, to operate the federal government’s collections and deposit systems, to provide government-wide accounting and reporting services, and to manage the collection of delinquent debt owed to the government.

FTC – Federal Trade Commission

GAO – Government Accounting Office

GPO – U.S. Government Printing Office

Government Information, Microforms, and Statistical Services (GIMSS) – Links to many regional, national, and international topics, as well as a detailed statistics section.

GSA – U.S. General Services Administration

Internet Publications [from the Federal Government] – More than 1,600 full-text publications from the U.S. Government

Internal Revenue Service (IRS) – Internal Revenue Service

Justice Department – United States Justice Department

NARA – National Archives and Records Administration

NASA – National Aeronautics and Space Administration

NCDC – National Climatic Data Center

NOAA – National Oceanic & Atmospheric Administration

NTIS – National Technical Information Service

OSHA – Occupational Safety & Health Administration

SBA – Small Business Administration

SSA – Social Security Administration

State Department – State Department

TREASURY – Treasury Department

USCODE – U.S. Internet Law Library U.S. Code – came online in 1999 with the mission of providing students and their families with a student-centered, interagency gateway to the federal services and information they need from across the entire US government and selected non-government sites.

US Department of Justice – US Department of Justice

U.S. Federal Emergency Management Agency (FEMA) – U.S. Federal Emergency Management Agency (FEMA)

U.S. Fish and Wildlife Service – The Mission of the U.S. Fish & Wildlife Service: working with others to conserve, protect and enhance fish, wildlife, and plants and their habitats for the continuing benefit of the American people





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