List of United States state and local law enforcement agencies

This is a list of U.S. state and local law enforcement agencies — local, regional, special and statewide government agencies (state police) of the U.S. states that provide law enforcement duties, including investigations, prevention and patrol functions. In addition, the Attorney General's office of each state may have their own investigators.

The Bureau of Justice Statistics conducted a census of state and local law enforcement agencies every four years 1992-2008.

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