The NIBRS, implemented to improve the overall quality of crime data collected by law enforcement, captures details on each single crime incident—as well as on separate offenses within the same incident—including information on victims, known offenders, relationships between victims and offenders, arrestees, and property involved in the crimes.
Unlike data reported through UCR’s traditional Summary Reporting System (an aggregate monthly tally of crimes) and published annually in Crime in the United States, NIBRS data goes much deeper because of its ability to provide circumstances and context for crimes. It includes all offenses within a single incident as well as additional aspects about each event, like location, time of day, relationship between victim and offender, and whether the incident was cleared. Ultimately, NIBRS will improve the detail and overall quality of crime data, which will help law enforcement and communities around the country use resources more strategically and effectively.
However, only about a third of all U.S. law enforcement agencies currently participate in NIBRS. Transitioning to the new system can be somewhat costly, and—because of the greater level of reporting specificity in NIBRS—it can initially appear that an agency has higher levels of crime after switching to NIBRS. But because NIBRS can provide more useful statistics that will promote constructive discussion, measured planning, and informed policing, FBI Director James Comey has made across-the-board implementation of NIBRS a top priority.
The UCR program is actively working to increase NIBRS participation by partnering with the Bureau of Justice Statistics on the National Crime Statistics Exchange, working with advocacy groups to emphasize the importance of NIBRS data for the public and the law enforcement community, and transitioning the UCR program to a NIBRS only data collection within five years.
The vision for the NIBRS is to become the law enforcement community’s standard for quantifying crime, further supporting the mission of the FBI UCR Program, which is to provide national crime data management standards and services to inform, educate, and strengthen communities through Uniform Crime Reporting.
For Authorized UCR (NIBRS) Users:
- NIBRS Technical Specification (Version 2.1) (pdf)
- NIBRS User Manual (Version 1.0)
- Conversion of NIBRS Data to Summary Data (Version 3.0) (pdf)