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Uniform Crime Reporting (UCR) Program

National Incident-Based Reporting System (NIBRS)

Background on the collection of reported crime data

Since 1930, the Federal Bureau of Investigation's Uniform Crime Reporting (UCR) Program has collected information about crimes known to and arrests made by law enforcement. The UCR Summary Reporting System (SRS) collected monthly counts of the number of crimes known to law enforcement from thousands of agencies throughout the United States. Information on the number of crimes known...