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A Word About NIBRS

The National Incident-Based Reporting System, or NIBRS, was created in 1991 to improve the quantity and quality of crime data collected by law enforcement. It captures more detailed information of each single crime occurrence than the Uniform Crime Reporting (UCR) Program's traditional Summary Reporting System, collecting data on when and where crime takes place, what form it takes, and the characteristics of victims and perpetrators.

NIBRS 2011, the first published compilation of annual data, represents crime data from calendar year 2011 reported by 5,880 law enforcement agencies around the nation, approximately 32 percent of all UCR agencies. The data includes information on incidents, offenses, victims, and known offenders for 46 specific crimes in 22 major offense categories. It captures data such as the age, sex, and race of victims, offenders, and arrestees; crime locations and times of day; and the type of weapons and force involved. The report includes a total of 56 tables—32 tables on offense categories and 24 tables on sex offenses.

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What NIBRS 2011 can tell us