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National Incident-Based Reporting System, 2008 (ICPSR 27647)

Alternate Title:  NIBRS, 2008

Principal Investigator(s):


The National Incident-Based Reporting System (NIBRS) is a part of the Uniform Crime Reporting Program (UCR), administered by the Federal Bureau of Investigation (FBI). In the late 1970s, the law enforcement community called for a thorough evaluative study of the UCR with the objective of recommending an expanded and enhanced UCR program to meet law enforcement needs into the 21st century. The FBI fully concurred with the need for an updated program to meet contemporary needs and provided its support, formulating a comprehensive redesign effort. Following a multiyear study, a "Blueprint for the Future of the Uniform Crime Reporting Program" was developed. Using the "Blueprint," and in consultation with local and state law enforcement executives, the FBI formulated new guidelines for the Uniform Crime Reports. The National Incident-Based Reporting System (NIBRS) was implemented to meet these guidelines. NIBRS data are archived at ICPSR as 13 separate data files per year, which may be merged by using linkage variables. The data focus on a variety of aspects of a crime incident. Part 4, Administrative Segment, offers data on the incident, itself (date and time). Each crime incident is delineated by one administrative segment record. Also provided are Part 5, Offense Segment (offense type, location, weapon use, and bias motivation), Part 6, Property Segment (type of property loss, property description, property value, drug type and quantity), Part 7, Victim Segment (age, sex, race, ethnicity, and injuries), Part 8, Offender Segment (age, sex, and race), and Part 9, Arrestee Segment (arrest date, age, sex, race, and weapon use). The Batch Header Segment (Parts 1-3) separates and identifies individual police agencies by Originating Agency Identifier (ORI). Batch Header information, which is contained on three records for each ORI, includes agency name, geographic location, and population of the area. Part 10, Group B Arrest Report Segment, includes arrestee data for Group B crimes. Window Segments files (Parts 11-13) pertain to incidents for which the complete Group A Incident Report was not submitted to the FBI. In general, a Window Segment record will be generated if the incident occurred prior to January 1 of the previous year or if the incident occurred prior to when the agency started NIBRS reporting. As with the UCR, participation in NIBRS is voluntary on the part of law enforcement agencies. The data are not a representative sample of crime in the United States.

Series: National Incident-Based Reporting System (NIBRS) Series

Access Notes

  • These data are freely available.


WARNING: This study is over 150MB in size and may take several minutes to download on a typical internet connection.

DS0:  Study-Level Files
DS1:  Batch Header Segment 1 - Download All Files (3.9 MB)
DS2:  Batch Header Segment 2 - Download All Files (3.9 MB)
DS3:  Batch Header Segment 3 - Download All Files (3.9 MB)
DS4:  Administrative Segment - Download All Files (304.8 MB) large dataset
DS5:  Offense Segment - Download All Files (342 MB) large dataset
DS6:  Property Segment - Download All Files (610.2 MB) large dataset
DS7:  Victim Segment - Download All Files (756.5 MB) large dataset
DS8:  Offender Segment - Download All Files (243.1 MB) large dataset
DS9:  Arrestee Segment - Download All Files (113 MB)
DS10:  Group B Arrest Report Segment - Download All Files (97.6 MB)
DS11:  Window Exceptionally Cleared Segment - Download All Files (1.2 MB)
DS12:  Window Recovered Property Segment - Download All Files (1.3 MB)
DS13:  Window Arrestee Segment - Download All Files (2 MB)

Study Description


United States Department of Justice. Federal Bureau of Investigation. National Incident-Based Reporting System, 2008. ICPSR27647-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2010-05-03.

Persistent URL:

Export Citation:

  • RIS (generic format for RefWorks, EndNote, etc.)
  • EndNote XML (EndNote X4.0.1 or higher)


This study was funded by:

  • United States Department of Justice. Federal Bureau of Investigation
  • United States Department of Justice. Office of Justice Programs. Bureau of Justice Statistics

Scope of Study

Subject Terms:   arrests, crime, crime rates, crime reporting, law enforcement agencies, national crime statistics (USA), offenders, offenses, property crime, Uniform Crime Reports, victims, violent crime

Smallest Geographic Unit:   city

Geographic Coverage:   United States

Time Period:  

  • 2008

Date of Collection:  

  • 2008

Universe:   Law enforcement agencies in the United States participating in the National Incident-Based Reporting System.

Data Types:   event/transaction data


Mode of Data Collection:   on-site questionnaire

Extent of Processing:  ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection:

  • Performed consistency checks.
  • Created variable labels and/or value labels.
  • Created online analysis version with question text.
  • Checked for undocumented or out-of-range codes.


Original ICPSR Release:  

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