National Incident-Based Reporting System, 2012: Extract Files (ICPSR 35036)

Alternate Title:   NIBRS, 2012

Principal Investigator(s): National Archive of Criminal Justice Data


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). The extract files version of NIBRS was created to simplify working with NIBRS data. Data management issues with NIBRS are significant, especially when two or more segment levels are being merged. These issues require skills separate from data analysis. NIBRS data as formatted by the FBI are stored in a single file. These data are organized by various segment levels (record types). There are six main segment levels: administrative, offense, property, victim, offender, and arrestee. Each segment level has a different length and layout. There are other segment levels that occur with less frequency than the six main levels. Significant computing resources are necessary to work with the data in its single-file format. In addition, the user must be sophisticated in working with data in complex file types. For these reasons and the desire to facilitate the use of NIBRS data, ICPSR created the extract files. The data are not a representative sample of crime in the United States.

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

Access Notes

  • The public-use data files in this collection are available for access by the general public. Access does not require affiliation with an ICPSR member institution.


DS0:  Study-Level Files
DS1:  Incident-Level File - Download All Files (362.769 MB) large file
ASCII + SAS Setup    SPSS Setup   
DS2:  Victim-Level File - Download All Files (338.019 MB) large file
ASCII + SAS Setup    SPSS Setup   
DS3:  Offender-Level File - Download All Files (384.355 MB) large file
ASCII + SAS Setup    SPSS Setup   
DS4:  Arrestee-Level File - Download All Files (3708.793 MB) large file
ASCII + SAS Setup    SPSS Setup   

Study Description


National Archive of Criminal Justice Data. National Incident-Based Reporting System, 2012: Extract Files. ICPSR35036-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2014-07-03.

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This study was funded by:

  • 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:   

  • 2012

Date of Collection:   

  • 2012

Unit of Observation:    Dataset one - Incident, Dataset two - Victim, Dataset three - Offender, Dataset four - Arrestee

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

Data Type(s):    event/transaction data

Data Collection Notes:

Starting with the 2012 data, some offense, location, bias motivation, race, and ethnicity codes have been added or modified to include recent Advisory Policy Board (APB) and Office of Management and Budget (OMB) policy mandates to the UCR Program related to Human Trafficking, Hate Crime, and Race and Ethnicity information.


Time Method:    Cross-sectional

Mode of Data Collection:    record abstracts

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:

  • Created variable labels and/or value labels.
  • Standardized missing values.
  • Performed recodes and/or calculated derived variables.
  • Checked for undocumented or out-of-range codes.


Original ICPSR Release:   2014-07-03

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